Class of 1999 II: The Substitute (1994) Sasha Mitchell killcount

It's not a patch on the first movie (or second movie, depending on how you look at it) but this is still a fun low-buget sequel that follows another cyborg psycho-teacher played by Mitchell of Kickboxer 2-4 although *SPOILER* he's not really a robot, he's just the mentally ill son of Stacy Keach's character from the last movie.