Shared Computers in Tv Production and for CH 22

[ebmonkey2]

I work on the tv production team and local educational channel for my distrisct. In our studio at my high school, there is a back office with three mac pros with apple cinema displays. They are shared among the officers and tv production users. I happen to share my computer with the student director of programming, who got pissed when I changed the login screen and logo on this computer, so much so that he decided he would abuse his power, and without asking the advisor, demote my account to standard. I finally told the advisor what was going on today, insteading of hacking root and fixing it myself, and he made my account an admin again, and I changed the login screen and logo back to normal.

However, I have a feeling, the director of programming will try to pull something again. Is there a way on a mac to prevent admins from managing permissions of other admins, so that he cannot tamper with my account?

Any information would be greatly appreciated.

Thanks,
ebmonkey