hello!

I try to fix some "old" Problems in my school:

I'm looking for a way to give a teacher the chance to start and stop access to Internet for a whole classroom, anytime he likes. Best way
is
the most simple way.

Problem is, that Internet is part of lecture, but only sometimes. So
the
periodic blocking ist not very useful.

By the way, all Classrooms are in their own subnet ....

Some good ideas?

Andreas