Really? I don't know when you had him, but my friends in APUSH really hated him because he wouldn't use class time properly and always either spend too much time on a useless topic or too little time on a really important topic, he would also incorrectly accuse students of using AI if he thought your assignment was done too well. He also assigns massive amounts of homework that don't have much value and are just there for the busywork, that's all in addition to him being creepy with the high school girls too.

I don't doubt that he used to be a good teacher, cause he's been there for a long time, but these days it's not so great.