What an educator would appreciate is having the forums disabled, and a class login that they could get from you in advance. If the kids wanted to create another account at home, fair enough, but teachers WOULD supervise what was being entered in the classroom. Before any game could be published, it should have to be proofread by a teacher who then enters a code (provided by you)
If you want any more help with this GREAT idea, then let me know (I'll even test your ideas out in the classroom)