I also had a young earth creationist substitute teacher teach social studies (usually it was just history but this class was more modern culture around the world)

our physics teacher was this retired amateur "scientist" with no license in teaching that our school just plucked because he was willing to work for free and he would go on inane racist rants fantasizing about using machine guns and crocodiles to kill migrant workers. the school was 50%+ minority

Like full on young earth creationist he told us they carbon dated a dead dolphin and found it was 12000 years old he was exactly the kind of person Reddit/youtube atheists made fun of