well it did take half a year before he did something

It's not "revenge" for the teacher to be fired and blackballed from the profession. She never should have been within hailing distance of any student, anywhere, ever. I've run into teachers like her before, both as a student and as a teacher. What they do is child abuse and it can have lifelong effects.

I agree with you Hans. Particularly when it comes to the title. I'm a teacher myself, and the whole reason I got into to teaching was to make a difference in kids' lives. Teachers like Mrs. Frank are a big reason why public school teachers have to jump through so many hoops and deal with a lot of c**p for mediocre pay. Teachers like that stick around because they have tenure, a pension, etc. It's purely out of convenience. Losing her job was an inconvenience. But hundreds, maybe thousands (depending on how many years she had left) of students benefited from this guy's work. That's what matters the most.

I honestly dont get why "revenge" seems to have a negative meaning. Revenge can be just, too.

perfect justice would be unfeeling justice, and asking any human to be unfeeling specially high school age boys or girls so that call for perfecr justice would be unjust in of itself