ChatGPT answers, unedited

For language-learning cohorts where you need robust chat + small practice groups + calendar reminders, I would look less at language-exchange apps and more at community/cohort platforms. The best choice depends on whether you want a “school community” feel or a “course management” feel.

My top picks

1. Circle — best overall for teacher-led cohorts

Best if you run multiple cohorts and want a polished learner community.

Strengths:

• Topic-based chat spaces (“Week 1 speaking practice,” “Grammar clinic,” “Announcements”)
• Private groups for each cohort
• Events with calendar reminders
• Live sessions integration
• Good learner profiles and searchable discussions
• Feels like a private language academy community

Weaknesses:

• Costs more than simple chat tools
• You’ll need to structure the learning experience yourself

Best setup:

• One space per language
• One private group per cohort
• Weekly speaking rooms
• Calendar events for practice sessions

2. Mighty Networks — best for engagement and mobile learners

Best if your learners are social and you want them to build relationships.

Strengths:

• Strong mobile app experience
• Groups, events, chat, member profiles
• Community challenges and accountability features
• Good for recurring cohorts

Weaknesses:

• Less “classroom-like” than some education platforms

3. Kajabi — best if you sell courses

Best if your cohorts are part of a paid program with lessons, payments, and marketing.

Strengths:

• Course content + community
• Email reminders
• Payments
• Automations
• Good for a language business

Weaknesses:

• Community features are not as deep as Circle/Mighty Networks

4. Discord — best budget option

Best if your learners are comfortable with tech.

Strengths:

• Excellent real-time chat
• Voice rooms for practice groups
• Private channels by cohort
• Free
• Easy peer practice

Weaknesses:

• Can feel informal
• Calendar/reminder workflow is weaker unless you add bots/tools

5. Google Classroom + calendar.google.com — best simple classroom stack

Best if you teach more traditionally.

Strengths:

• Assignments
• Materials
• Announcements
• Calendar integration

Weaknesses:

• Not designed for lively community conversation

What I would choose for your use case

For a language cohort model (students learn together over weeks/months):

Premium / professional:
→ Circle

Affordable but still community-focused:
→ Mighty Networks

Bootstrapped starting point:
→ Discord + Google Calendar

I would avoid relying on apps like HelloTalk or Tandem for your core cohort management—they are useful for learner-to-learner practice, but they are not built around a teacher managing cohorts, schedules, and progression. Preply HelloTalk

A few questions would change the recommendation:

1. How many learners are in a typical cohort (10, 50, 500+)?
2. Are cohorts live classes, self-paced, or a mix?
3. Do you need video lessons and homework tracking, or mainly conversation/community?

Affordable but still community-focused:
→ Mighty Networks

Bootstrapped starting point:
→ Discord + Google Calendar

For language cohorts (not just a course library), I’d prioritise platforms that combine:

• persistent group chat/community
• small practice groups or breakout spaces
• calendar events + reminders
• learner accountability between lessons
• easy onboarding for non-technical students

My shortlist:

My recommendation by teaching model

1. You run 6–12 week cohorts with live classes
→ Circle + Zoom (or similar video tool)

This is probably the strongest setup:

• Cohort homepage
• Weekly discussion prompts
• Practice pairs/groups
• Events calendar
• Reminder notifications
• Homework threads
• Peer accountability

2. You want a “language club” that runs continuously
→ Mighty Networks

Good if learners stay for months and move through levels.

3. Your teaching is conversation-heavy
→ Discord

A good fit if you want:

• “Spanish B2 speaking room”
• “French pronunciation clinic”
• “Tuesday conversation café”
• learner voice practice

But you may spend more time explaining the interface.

4. You want one platform instead of stitching tools together
→ Tuton

It is designed around language tutors and includes chat, scheduling, tasks, and student management. Tuton

I would avoid using only:

• WhatsApp/Telegram: great for reminders, weak for structured learning archives.
• Google Classroom: good for assignments, weak for community.
• LMS-only platforms: learners need interaction, not just content.

For a language cohort, I’d choose:

Premium cohort (£200–£1,000+ per learner): Circle
Affordable group classes: Discord + Zoom
Solo tutor scaling into cohorts: Tuton
Membership community: Mighty Networks

One question would change the recommendation: are your cohorts mainly live speaking groups, self-paced courses with community, or a hybrid of both?

For your use case, I’d make Microsoft Teams for Education the default choice.

microsoft.com

Why it fits language cohorts

• Cohorts: Create one class/team per cohort, then organize it with channels for levels, units, or activities. Channels can also be private, which works well for practice groups. Microsoft Support Microsoft Support
• Robust chat: Students can post in cohort channels, reply in threads, DM each other, or create group chats. Microsoft Support
• Speaking practice: Teams supports video meetings and breakout rooms, so you can run pair/group conversation practice without moving students to another platform. Microsoft Support
• Calendar: Recurring meetings can be scheduled directly in Teams, and meetings added to a class channel appear on students' calendars. Microsoft Support
• Reminders/assignments: Assignments can have due dates and can be added to students' Teams/Outlook calendars, with notifications. Microsoft Support Microsoft Support
• Teaching workflow: You also get files, assignments, grading, OneNote, quizzes, and progress tracking in the same environment. Microsoft Support Microsoft Support

My ranking for your needs

One important distinction: if your priority is structured language instruction—assignments, cohorts, practice groups, recurring sessions, reminders, and teacher management—I’d choose Teams. If your priority is more like a language-learning community/membership, where conversation and peer interaction matter more than formal coursework, I’d look seriously at Circle instead.

If you tell me (1) cohort size, (2) whether classes are live or asynchronous, (3) whether students pay you directly, and (4) whether you need homework/assessment, I can narrow this down to the best 2–3 platforms for your exact setup.

For your use case, I’d pick Microsoft Teams for Education—especially if your cohorts are structured classes rather than an informal language-learning community.

Best fit: Microsoft Teams for Education

It covers your three priorities unusually well:

• Robust chat: You get class-wide posts, private/group chats, @mentions, and moderated discussions. support.microsoft.com
• Practice groups: You can create separate channels for each speaking/practice group, including private channels when appropriate. support.microsoft.comsupport.discord.com
• Calendar/reminders: Meetings can be scheduled directly in Teams, including recurring sessions, and the meeting is added to students' calendars. support.microsoft.com
• Teaching workflow: Assignments, files, quizzes, grades, announcements, and class materials can all live alongside the conversation. support.microsoft.com
• Language practice: Teams meetings support small-group work/breakout rooms, which is particularly useful for conversation practice. support.microsoft.com

Microsoft Teams for Education

How I'd structure it

For each cohort:

Cohort — Spanish B1

• Announcements — teacher-only important updates
• General Chat — questions and informal conversation
• Speaking Group A
• Speaking Group B
• Writing Practice
• Weekly Challenges

Then use the Calendar for recurring:

• Monday lesson
• Wednesday conversation group
• Friday practice/reminder
• Assessment dates

That gives you one place where students can talk → practice in groups → attend sessions → see reminders, rather than stitching together WhatsApp/Discord + Google Calendar + Zoom.

When I'd choose something else

Discord is my second choice if your priority is creating a lively, community-oriented language-learning environment. Its scheduled events can notify participants when an event starts, and its channels are excellent for persistent conversation. support.discord.com But it is less education-oriented than Teams.

Moodle would be stronger if you need a full LMS with sophisticated courses, assessments, grading, and learner records—but I'd find it heavier than necessary if chat and cohort interaction are your main needs.

Bottom line:
Teams = best all-in-one choice for structured cohorts.
Discord = best for informal/community-heavy language practice.
Moodle = best when LMS/course management is the dominant requirement.

If you tell me (1) cohort size, (2) whether learners are adults/children, (3) whether you need video lessons, and (4) whether you're paying yourself or through a school, I can narrow this down to the best 2–3 platforms and compare their costs/features.

For your use case, I’d choose Circle if this is a learner-facing cohort/community, and Microsoft Teams for Education if you’re working inside a school or institution.

My ranking

1. Circle — my pick for you.
Circle is particularly well suited to a language-learning community: you can create separate spaces for each cohort, proficiency level, or practice activity; its chat spaces support threads, mentions, files and voice messages; and its event system includes recurring events, RSVPs, calendar invites, reminders and notifications. help.circle.so

A structure like this would work well:

• Announcements
• Cohort A — B1
• Cohort B — B2
• Conversation practice
• Writing practice
• Peer feedback
• Weekly events / office hours

The big advantage is that the community and calendar live together, rather than making learners jump between a chat app, Zoom and Google Calendar.

2. Microsoft Teams — best if you're teaching through an institution.
Teams for Education is considerably more classroom-oriented. Class teams have channels for topics/groups, assignments, grades, class notebooks and progress/engagement tools. Students can also have private/group chats and join scheduled meetings. help.circle.sosupport.microsoft.com

It can also put recurring class meetings directly onto students' calendars, which is excellent for scheduled conversation practice. support.microsoft.com

3. Slack — excellent chat, weaker as a teaching platform.
Slack is fantastic for spontaneous language practice: channels for cohorts, small-group DMs, threads, and live huddles. Paid huddles support group conversations, while the free version limits huddles to two people. slack.com

But I'd pick it primarily when your learners are adults/professionals already comfortable with Slack, rather than when you want a structured educational environment.

Bottom line

If you're running your own language-learning cohorts → Circle.
If you're a school/university or need assignments, grading and institutional controls → Teams.
If your priority is conversational community and your learners already use Slack → Slack.

If you tell me (1) adult vs. school-age learners, (2) cohort size, (3) paid vs. free, and (4) whether you need homework/assessment, I can narrow this to one platform and suggest the exact setup.

For your specific use case—language-learning cohorts + robust chat + peer practice groups + calendar/reminder support—I’d shortlist Microsoft Teams for Education and Google Classroom, with Teams as my first choice.

My ranking

🥇 I'd choose Microsoft Teams

Teams maps unusually well to language cohorts because you can structure it as:

Cohort
→ General channel
→ Announcements
→ Speaking Practice
→ Writing Partners
→ Conversation Group A
→ Conversation Group B
→ Resources / homework

Students can have whole-class conversations, private/group chats, and video meetings. Teams also supports breakout rooms for small-group conversation practice. support.microsoft.com

The calendar is a particularly strong fit: you can schedule recurring meetings, and scheduled class meetings are added to students' calendars. support.microsoft.com You can also use announcements, @mentions, and important messages to make sure learners see reminders. support.microsoft.com

For language teaching, I'd make small practice channels/groups a core part of the design rather than having everything happen in one giant cohort chat.

Microsoft Teams for Education

🥈 Google Classroom if coursework is the priority

Classroom is excellent if your model is primarily:

lesson → assignment → submission → feedback → next lesson

It has automated calendar reminders, student to-do lists, due dates, communication tools, and integrations with other educational apps. edu.google.com

But for ongoing conversational community + peer speaking practice, I'd favor Teams. Classroom's communication is more centered around coursework than a persistent cohort community.

Google Classroom

One important distinction

If by "practice groups" you mean students should spontaneously chat with one another every day, rather than merely join scheduled exercises, I'd put Teams substantially ahead of Classroom.

If you're running a paid language-learning program independently of a school, I'd also consider Moodle + a dedicated chat/video layer rather than automatically choosing an education-suite product.

If you tell me (1) cohort size, (2) synchronous vs. asynchronous, (3) whether students pay you directly, and (4) whether you need assignments/grades, I can narrow this down to the best platform and a concrete setup for your cohorts.

For your use case, I’d pick Microsoft Teams for Education if this is primarily teaching, and Circle if your cohorts are more like a paid language-learning community.

My ranking

1. Teams — best overall for teaching cohorts.
You can create a class/team, then channels such as Announcements, Speaking Practice, Writing, and individual practice groups. Teams supports group chats, breakout rooms, recurring meetings, assignments, files, and calendars; scheduled class meetings can appear on students' calendars. support.microsoft.com

2. Circle — best if the cohort experience/community matters most.
It's particularly attractive if you're running recurring cohorts, memberships, or a language-learning community. You can organize discussions and chat into spaces, create events, collect RSVPs, and automate reminder emails/push notifications. circle.socircle.so
The downside is cost: Circle's current Professional plan is listed at $89/month, so it's more of a business/community platform than a basic classroom tool. circle.socircle.so

3. Discord — best for lively peer practice.
You can make channels for each language level or practice type and use voice channels for spontaneous conversation. Scheduled Events can notify interested members when a session starts. support.discord.com Its weakness is that assignments, curriculum, assessment, and structured teaching are much less natural than in Teams.

What I'd actually build

If you're teaching, say, 4–8 week language cohorts, I'd start with Teams:

• General → announcements + weekly instructions
• Speaking Practice → prompts and voice/video sessions
• Writing Practice → submissions + peer feedback
• Cohort A / B / C → private practice groups
• Calendar → recurring live lessons + conversation sessions
• Assignments → weekly language tasks
• Breakout rooms → pairs/triads during live speaking practice

That gives you a single place for communication + small-group practice + scheduling + coursework, rather than making students juggle Discord/WhatsApp/Google Calendar/LMS separately. Microsoft's education version specifically supports channels for group work and small differentiated groups. support.microsoft.com

Bottom line:
Choose Teams if you want a classroom.
Choose Circle if you want a language-learning community/business.
Choose Discord if you want a high-energy speaking club.

If you tell me (1) cohort size, (2) whether students pay you directly, and (3) whether lessons are live or mostly asynchronous, I can narrow it to one platform and suggest the exact setup.

For your specific use case—language-learning cohorts + strong chat + small practice groups + calendar/reminder workflows—I’d choose Microsoft Teams for Education if your learners can use Microsoft accounts.

My ranking

🥇 Microsoft Teams — my recommendation

Teams is unusually well matched to what you're describing. You can create a class team for each cohort, then create channels for things like:

• 💬 General conversation
• 🗣️ Speaking practice
• 👥 Pair/group practice
• ✍️ Writing feedback
• 🎧 Listening practice
• 📚 Weekly assignments

Teams supports both channel conversations and private/group chats, and its class meetings support breakout rooms, which is particularly useful for language speaking practice. support.microsoft.comsupport.microsoft.comcircle.sosupport.google.com

The calendar is also integrated: you can schedule recurring meetings, and meetings can appear on students' calendars. Assignments can likewise be added to students' Teams/Outlook calendars with notifications. support.microsoft.com

For a language cohort, I'd structure it roughly like:

Cohort A
→ General
→ Announcements
→ Speaking Café
→ Conversation Groups
→ Writing Workshop
→ Homework

Then make Conversation Groups private channels if you want fixed groups of 3–5 learners. Teams supports standard and private channels, so you can control who sees each practice space. support.microsoft.com

🥈 Circle — better if this is a paid cohort/community business

I'd seriously consider Circle if your cohorts are more like membership programs, courses, or language communities rather than conventional school classes.

Circle combines community spaces, real-time chat, courses, events and other community functions, and explicitly positions itself around live cohorts and community engagement. circle.so

The advantage is that it feels more like “my language-learning community” than “my school classroom.”

🥉 Google Classroom

Google Classroom is excellent for assignments, due dates and academic organization, and its notification system is solid. support.google.com

But for your particular priority—lots of ongoing learner-to-learner conversation and practice groups—I'd put Teams or Circle ahead of it.

Bottom line

If you teach through a school/institution → Microsoft Teams.

If you run independent paid cohorts → Circle.

If assignments and academic workflow matter more than conversation → Google Classroom.

For language teaching specifically, I'd lean Teams, because the combination of persistent chat + private practice groups + live breakout rooms + recurring calendar meetings + assignment reminders gives you almost everything in one ecosystem. support.microsoft.com

If you tell me (1) cohort size, (2) whether learners are adults/children, (3) whether you're an independent teacher or school, and (4) whether you need students to practice asynchronously, I can narrow it down to the best 1–2 platforms for your exact setup.

For your use case, Microsoft Teams for Education is the strongest all-in-one choice.

Why I’d pick it for language-learning cohorts:

• Cohort spaces: Create one class/team per cohort, then channels for things like Speaking Practice, Writing, Announcements, or individual practice groups. Channels keep conversations and files organized. support.microsoft.com
• Robust chat: Students can communicate in whole-class channels, private chats, or group chats. You can also control/moderate participation. support.microsoft.com
• Practice groups: Teams supports live meetings and breakout rooms, making it particularly suitable for pair/group speaking practice. support.microsoft.com
• Calendar/reminders: Meetings can be scheduled from the Teams calendar, including recurring meetings, and they appear on students' calendars. support.microsoft.com
• Teaching features: Assignments, files, Class Notebook, quizzes, grades, and progress/engagement tools are built into class teams. support.microsoft.comslack.com
• Safety/control: For student groups, Teams provides features such as meeting roles, lobbies, chat controls, and moderation. support.microsoft.com

My ranking

Slack is the main alternative I'd consider if your courses are primarily conversational/community-based rather than assignment-based. It has channels, DMs, huddles, and scheduled reminders; however, its free-plan huddles are limited to two participants, while paid plans support larger huddles. slack.com

Bottom line: If you want one platform where each cohort can chat asynchronously, meet in small speaking groups, receive scheduled practice sessions, and keep course materials/assignments together, choose Teams for Education.

If you tell me (1) cohort size, (2) whether learners are adults or minors, (3) whether you're affiliated with a school, and (4) your budget, I can narrow this down to the best 2–3 platforms and explain exactly how I'd structure your cohorts.

For your specific mix—language-learning cohorts + robust chat + practice groups + calendar/reminders—I’d put Microsoft Teams for Education at the top, especially if you want one platform rather than stitching several tools together.

My ranking

Why I'd choose Teams

Teams maps unusually well to language teaching:

• One class = one cohort, with channels for units, conversation practice, pronunciation, homework, etc. Channels can be standard or private, which is useful for different practice groups. support.microsoft.com
• Students can have class-wide conversations, 1:1 chats, or group chats, and you can run breakout-room activities for speaking practice. support.microsoft.com
• You can schedule recurring live sessions and add them to both your and students' calendars. support.microsoft.com
• Assignments can have due dates, scheduled release dates, notifications, and calendar entries for students. support.microsoft.com
• You can create separate channels such as “Speaking Partners,” “Weekly Challenge,” “Beginner Practice,” etc., rather than having all conversation disappear into one giant chat.
• It also gives you assignments, files, grades, collaborative notebooks, and progress/engagement tools in the same environment. support.microsoft.com

For language learning specifically, I'd structure it something like:

Cohort
→ 📢 Announcements
→ 📚 Week 1 / Week 2 / Week 3
→ 🗣️ Speaking Practice
→ 👥 Practice Group A
→ 👥 Practice Group B
→ ✍️ Writing Feedback
→ 🎧 Listening Challenges
→ 📅 Calendar / Live Sessions

That gives you a pretty natural “classroom + community + practice club” rather than just an LMS.

One important caveat

If by “cohorts” you mean commercial cohort-based courses—e.g. you recruit 15–30 adult learners, run 6-week programs, repeatedly enroll new cohorts, and want a polished community/course experience—I'd look seriously at Teachfloor instead. It is specifically aimed at cohort-based learning and is one of the stronger alternatives in that category. www.teachfloor.com

If you're teaching through a school, university, or organization, I'd favor Teams.

If you're an independent language teacher running paid cohorts, I'd compare Teams vs. Teachfloor vs. Circle before deciding.

If you tell me (1) how many learners are typically in a cohort, (2) whether they're adults or students, and (3) whether you're an independent teacher or part of a school, I can narrow it down to the best 2–3 and explain the tradeoffs.

For a language-learning cohort model (recurring groups, peer practice, instructor-led sessions), I’d prioritize a platform that combines:

1. Persistent community chat (not just class announcements)
2. Practice groups / breakout communities
3. Calendar + automated reminders
4. Assignments, resources, and progress tracking
5. Low friction for learners

My shortlist:

www.disco.co

My recommendations by teaching style

If you run small-to-medium cohorts (10–100 learners) and want a “language school community”:
→ Circle is probably the best balance. Create:

• #announcements
• #daily-speaking-prompts
• level-based groups (A1, A2, B1…)
• partner practice channels
• weekly events
• office hours

If your cohorts are the product (e.g., “12-week Spanish Fluency Accelerator”):
→ Disco or Maven. They are built around cohort journeys: onboarding, scheduled sessions, reminders, curriculum flow, and community. www.disco.co

If speaking practice is the main outcome:
→ Consider pairing a community platform with a video tool:

• Community: Circle/Mighty Networks
• Live practice: Zoom
• Scheduling: built-in events or Google Calendar integration

If you want the simplest/cheapest setup:
→ Discord + Google Calendar + Zoom can work surprisingly well, especially for conversational groups, but it feels less like a professional learning environment.

A setup I’d choose for a language cohort teacher

Professional paid cohort:

• Circle → community + groups + resources
• Zoom → live classes and speaking practice
• Google Calendar/Calendly → scheduling
• Stripe → payments

More casual conversation club:

• Discord → chat + voice rooms
• Google Calendar → reminders
• Zoom → larger sessions

One question changes the recommendation quite a bit: Are these cohorts mostly (a) paid programs with a fixed start/end date, (b) ongoing membership communities, or (c) school-style classes with homework and grading?

For language-learning cohorts, I’d prioritize platforms that support ongoing community + speaking practice + scheduling, not just course delivery. The best choice depends on whether you are running a paid cohort, a school program, or a community.

Here are the strongest options:

My recommendations by teaching model

1. You run 8–30 person language cohorts (weekly classes + practice groups)
→ Circle + Zoom + Google Calendar

A good setup:

• Circle = cohort home
  • “Beginner Spanish Cohort”
  • “Conversation Practice”
  • “Homework Feedback”
  • “Announcements”
• Zoom = live lessons + breakout rooms
• Calendar = automated reminders

This feels closest to a modern language academy.

2. Your main goal is getting learners to talk every day
→ Discord

Structure:

• #daily-prompts
• #voice-practice-room
• #grammar-questions
• #peer-feedback
• private channels for each cohort

Discord is especially strong because learners can jump into voice conversations without waiting for a scheduled class. thehiveindex.com

3. You sell a premium program ($500–$5,000+)
→ Circle or Mighty Networks

You can create:

• cohort onboarding
• accountability groups
• events
• office hours
• alumni communities

4. You need an all-in-one course business
→ Kajabi

Better if your priority is:

• landing pages
• payments
• email sequences
• courses

Less ideal if the heart of your product is conversation.

Features I would consider essential for language cohorts

Whatever you choose, make sure you have:

✅ Small practice groups (3–6 learners)
✅ Voice/video rooms
✅ Calendar events with automatic reminders
✅ Private cohort spaces
✅ Teacher announcements
✅ File/resource sharing
✅ Peer feedback workflows
✅ Mobile app access

A key point: chat alone is not enough for language learning. Text chat helps community, but learners improve faster when the platform makes speaking practice easy through pairs, small groups, or voice rooms. www.reddit.com

My shortlist:

1. Best overall: Circle
2. Best for speaking practice: Discord
3. Best all-in-one business platform: Kajabi
4. Best low-cost school setup: Google Classroom + Discord/Zoom

If you tell me:

• cohort size,
• live vs asynchronous ratio,
• languages taught,
• whether students pay,
• and whether you need payments/enrollment,

I can narrow it to one platform and suggest the exact setup.

For your specific use case, I’d choose Microsoft Teams for Education.

It is unusually well matched to a cohort-based language program because it combines persistent chat, small practice groups, live meetings, assignments, and calendars rather than making you stitch several tools together.

Why I'd pick it

1. One Team per cohort.
Create a Team for each cohort, then channels such as #announcements, #daily-practice, #speaking, #writing, and #questions. Teams supports both threaded channel conversations and private/group chats. support.microsoft.comsupport.microsoft.comsupport.microsoft.com

2. Make practice groups directly inside the platform.
You can create smaller group chats and use breakout rooms during live meetings—particularly useful for pair speaking exercises, role plays, pronunciation practice, and peer feedback. support.microsoft.comsupport.microsoft.comsupport.microsoft.com

3. Use Assignments for recurring language practice.
For example: "Record a 2-minute description of your weekend," "respond to two classmates," or "complete this vocabulary exercise." Assignments support individual students or groups and have due dates. support.microsoft.com

4. Calendar integration is a major advantage.
Assignments can automatically appear on students' Teams/Outlook calendars, and you can schedule recurring class/practice meetings. support.microsoft.com

5. It's particularly good if your learners already use Microsoft accounts.
Microsoft says Teams for Education is available free with an eligible school/institution email, although the exact capabilities depend on the institution's Microsoft 365 setup. www.microsoft.com

My runner-up

I'd consider Moodle if your priority is a more traditional LMS—structured courses, quizzes, grades, content, and progress tracking. But for language-learning cohorts where the social interaction and ongoing conversation are central, I'd favor Teams.

I would not make Slack your primary platform for this. Slack is excellent for community conversation, but Teams gives you a much more coherent combination of classroom management + practice groups + assignments + calendar.

Bottom line:
Teams = best all-around choice for cohort language teaching.
Set up one Team → channels for topics → small practice chats/groups → recurring speaking sessions → Assignments with calendar dates.

Microsoft Teams for Education

For your use case, I’d choose Microsoft Teams for Education.

Why it fits language-learning cohorts especially well:

• Cohort chat: each cohort gets its own class/team, with channels for topics or activities. support.microsoft.comsupport.microsoft.comsupport.microsoft.comsupport.discord.comslack.com
• Practice groups: you can create private channels and collaboration groups, which works well for conversation partners, role-play groups, or weekly speaking circles. support.microsoft.com
• Live practice: built-in video/audio meetings and breakout-style small-group conversations let learners practice speaking without leaving the platform. support.microsoft.comsupport.microsoft.comsupport.microsoft.comsupport.discord.comslack.com
• Calendar/reminders: meetings can be recurring, and assignments can automatically appear on students' Teams/Outlook calendars with notifications. support.microsoft.comsupport.microsoft.comsupport.microsoft.comsupport.discord.comslack.com
• Practice + accountability: assignments, due dates, submissions, feedback, and grades are built in. You can schedule activities to appear later, which is useful for drip-feeding weekly language practice. support.microsoft.com

How I'd structure it

One Team = one cohort

Channels:

• Announcements
• Week 1 — Introductions
• Week 2 — Past Tense
• Speaking Practice
• Writing Practice
• Culture / Off-topic

Then create small practice groups within the cohort for recurring speaking sessions, and use recurring calendar meetings for the live practice.

When I'd choose something else

Discord is better if your priority is a lively, community-like environment with lots of informal conversation. Its scheduled events can notify members about upcoming activities. support.discord.com

Slack is excellent for text-based cohort communities and organized discussion, with channels, DMs, and shared canvases, but I'd put it behind Teams for a teaching-focused setup. slack.com

Bottom line: if you want one platform that combines cohort chat + small-group practice + live sessions + calendar + assignments/reminders, Teams for Education is the strongest fit.

Microsoft Teams for Education