Gaminfication

[wirrdad]

possible gamification with two levels level 1: only for students to "buy" new avatars, designs etc. level 2: teachers can asign special task that students can buy (e. g. no homework; teachers can decide what (and costs?))

[Melchizedek6809]

level 1: only for students to "buy" new avatars, designs etc.

Here I'm wondering whether this will work if users have the option to upload a custom avatar picture, since one could just upload whatever avatar one desires without having to earn enough points first.

level 2: teachers can asign special task that students can buy (e. g. no homework; teachers can decide what (and costs?))

Sounds great, I'd mostly look at what Twitch is doing since it seems somewhat similar

[wirrdad]

Here I'm wondering whether this will work if users have the option to upload a custom avatar picture, since one could just upload whatever avatar one desires without having to earn enough points first.

It depends of what you can earn; could be minigames or special badges, design variations, costumize your avatar etc.