Upgrade to Mavericks at school
I teach computer science at school. In the lab we have 15 iMacs with OS X 10.6.8. Sadly these computers have always been used with Windows and bootcamp, but I want to change that, so I've already changed the initial boot drive, created accounts and installed stuff. Can I legally upgrade to Mavericks ? If yes what account should I use to log in at the Mac App Store ? Obviously I don't want to use my personal one. Can I create a new account without any credit card or other payment options ?
MacBook Pro, Mac OS X (10.7.3)