It's genuinely crazy how much a bad teacher can affect grades; Last year I literally just had a decent teacher and I was getting extra credit in literally every class and my gpa was a perfect 4.0 the entire year and I was literally excited to go to school and I would spend my weekends studying and then this year I had a shitty teacher and my gpa dropped from a 4.0 to a 1.3 and now I hate going to school