RapidWeaver in a multiuser classroom, difficulties

I teach RW at the Sibelius-Academy (1600 students). We have a classroom of 7 Macs and we have bought 7 RW license to all Macs. Now support says, that it is difficult to handle RW (registration numbers, prefs etc.) in a multiuser environment.
My question is, are there any other institutes where many students log with their personal credentials to a classroom mac and can start/use those few RW:s that are installed in to the classroom Macs? How you have solved this?