Guys, I'm having a problem =(

I hate school years from 1st to 9th grade, especially the 9th. I don't like 10th and 11th grade, although there were some good moments in them. The best time was in university - the best, brightest years, sincerely joyful and sad, of all the years I've lived so far, despite the fact that it was very difficult to study. I have something to say on the topic, but I can't formulate my thoughts right now.