Hey, if you want to grant yourself the root access, you just have to change the root password.
Your administrators probably disabled root user, cuz if anyone went on root user, that person can do anything they please quite easily, for example, completely deleting the administrator account.
There is a way of changing the root password and enabling it, even if you don't have any privileges, but I'm not going to tell any of you.
I'm not going to post information that you'll use to crack the school server and wreck havoc with.
Oh, and the administrator has a way of checking if anyone has cracked into the server.
Your administrator probably has ARD (Apple Remote Desktop) 2. ARD can track anybody, I think even the root user's screen and lock it. If you've get locked, simply shut down and run away as far as you can.
That's all I'm going to give to any of you