I can't remember the login information for the iBook I bought...

A few years back i bought an iBook from a high school auction in my hometown. At the time they gave me the log-in

It was something like "Student240" for the username and "student" for the password.

Unfortunately, I lost the iBook while moving soon thereafter. I recently came across it while moving yet again, but now it has been so long I don't actually remember the username/password. On top of that, I have already tried to use script to restart the computer, but that doesn't work. It just throws me back to the school's log in page.

Does anyone know of anything I could do for this?