I think it looks nice. The light gives a nice feeling, that this classroom is not a place of fun :D

Anyway here is my addition to your mini challenge. Now it have a bit of a different theme i guess and is actually not meant for this, but a room is a room i guess :D

It probably make little sense, so here is the actual image after PS etc, even though there is a person in it. So sorry for breaking the rules :D