Mac Hacking?

My school uses macs that are highly secure. they all have login screens on startup which is your student id and stuff. once logged in they restrict programs ,files etc. . They also use a machine called Iprism. this filters almost everything on the net! is there any way to get around any of these?

hmm actully there is my school uses macs as well go to http://www.networksolutions.com/whois/index.jsp enter the site and go though the IP in the url bar yes it works also if your trying to get on myspace or something go to google type in myspace and press cached should work just find the login on that page and enter your user name and pw jw but what kind of macs are you using?