Pretty much hated high school. I was never happy in High school. I thought I was just emo and then I went to college and was happy, and I've been happy since, and I realized High school was the problem, not me.
My favorite memories of life when I was in high school were usually things not related to high school, but things outside of school like my job. First time I ever really hung out and had a beer at a bar was during the Patriots snow bowl game against Oakland, I worked at a restaurant, it was a brutal snowstorm out and the place was empty, so all the coworkers were hanging around watching the game, and my manager poured us all beers thanking us for coming in despite not making any money, even though I was like 17. I used to have a beer at parties or w/e, but never at a bar with other friends/people and so I thought that was pretty cool. I remember how pissed everyone was on Brady's fumble, and I said "Eh... maybe next year," and a coworker picked up and threw a basket of condiments, and then like 90 seconds later they, famously, reversed the call. Anyway the result of the game was awesome, especially because I was a huge Patriots fan, but also I really fondly remember sitting around the bar with people who were older than me and feeling welcome.
I have almost no fond memories of being in high school though. Oddly, really thinking of it, all of my favorite memories of that time are memories of places I worked. I used to have a blast being at work even though I wouldn't want to go to work at the time, I now look back fondly at almost every high school job that I had and thinking fo my favorite memories of that time, nearly all of them center around the job I had.