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I don’t think Slack is appropriate as an LMS, although I love it as an application and it’s perfectly good as a chatroom. (We use it internally and also to communicate with our investors and advisors.)

Here are some reasons why:

  1. It’s ephemeral. To keep a complete history of your discussions, you need to pay. Subscriptions cost $8 per user per month, which is onerous for an institution.
  2. There is no real per-item or per-user privacy.
  3. It actually gets really overwhelming really quickly. I’m a member of 11 Slack spaces, which each have maybe 10–20 channels. Notifications are off the hook.
  4. Its webhook integrations are great, but teachers and institutions need more flexibility.
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