Computer account

Hello, in my school's library, all the computers' users can be logg on only with passwords assigned by school's IT staff. after I log on, fine!, I can save everything on Desktop or any folders but then I log off and re-log on, I find nothing on Desktop I previously saved.
Now on my home computer I have two account, one is of administrative type and the other is limited. I would like to make a similar function on the limited account that once the user logs off, everything once saved is deleted! :)

Thank you

Computers have group policy settings. Any computer on a domain can be configured to react this way. Helps with security and computer lockdown.