[btn]

Something they don't mention until after you've signed up: the micro plan only lasts for two years. I assume any private repositories will become locked if you don't pay for a subscription after that (as with regular accounts).

In comparison with BitBucket (not to advocate, but they offer a comparable service): the restrictions they waive for academic accounts are done so permanently.

[rxdazn]

You can renew it after two years though (still free of charge).

[btn]

Is that spelt out somewhere? The only mention of it I can find is in the confirmation email they sent: "will be free for the next two years".

[rxdazn]

I don't think so. I just filled the form and my request was approved (they did check my school email).