They had RM Machines at my Secondary school and sixth form college. The system policies are very strict but there are ways around it. For example, they had disabled MyComputer and Run so it was seemingly impossible to navigate through hard disks etc, but I found a way to open Explorer by right-clicking the Recyle Bin and clicking Explore. Clearly they forgot about that.

Also, I managed to steel a teachers password so I could log in as them and have loads of access privilidges!! At the beginning of the year we were all told what format the passwords were in (they had been preset to your Surname and some other gumpf), so I logged in as one of the teachers before he had had chance to do it himself. Then I changed his password and used it for a good 9 months or so!! That was cool

He was an old woodwork teacher (must have been 60 at least) and never went near the machines. That's how I never got caught (chose your teacher wisely!!)