Lis is the name of the computer science high school that most of the Deprimus members went to: AndrewIGD, Pebly, MisterInfo, UW and MetaShifter.
The high school is one of (if not the) best high school in their area. However, a lot of students that attend it are only book smart; they don't know real programming.
At the back of the school dorms, there is a hole in a fence. That's how the delinquents skip classes by leaving the school property. In time, the school management has fixed the fence numerous times, and has even resorted to using barbed wire, but the delinquents kept cutting the fence. To this day, it is said that the hole is still there.