I'm new in classcraft and I'm loving to apply it in my class.
But, I suggest a new option in the game.
It's good to student gain XP using collaborative XP. But, if the student use the collaborative power without necessity this gain XP too. Example: If the student use HEAL in a player with full HP, this student gain XP. It's wrong. So, I suggest a option to avoid to use power when the consequency is null (unnecessary). Or a option to punish users that use power only to gain XP.
Actually, I disable the XP using collaborative powers.