I started watching this anime and it got me hooked. The problem is that it's starting to confuse me with some of these characters making so few appearances. Anyway I was wondering about the GTO faculty. I remember that the vice principal said that if you are part of the faculty you cannot be employed anywhere else. I remember he was saying this about the nurse. Then how come Onizuka is able to work? It's probably a useless question but it just came to mind.
I know that when Onizuka had to get part time jobs to get the students to go on the field trip, but I think in episode 42 (the one directly after the trip), he sees Tomoko in the restaurant and says he came from a part-time job. Maybe I'm just thinking too deeply into it?