I believe that "return the object" is the best solution to the "problem" of delection of objects by the owner of the region. Thanks.

I would like to use one region for education. I have 20 students. First "problem": can I create 20 acc using only my email? Second "problem": after my students have created objects (houses, by example), how can I delete the objects to clear my region for a new semester?
Thanks for any help.