Dont normally scoop "pay for" products but at £180 per annum for schools this is not a bad price for its claim that you can build a mobile game in 30minutes.
Edu allows multiple users and no advertising. You cannot submit to the store but publish in a secure area. Also allows tracking of student progress if you wish to consider a projet based course.
Lots of resources, templates and help to design. Possible crossover between IT and Computing.