The best thing about being in school was/is that you were always surrounded by people. In high school you had so many friends all day long, or were at least always surrounded by people. In college that was just trippled of course. But the best thing about college was that you ALWAYS saw the same people. Sure if you have the same schedules...but you'd always see them everywhere you went! At the grocery store, when you go out to the bars...everywhere!!
The worst thing about being in school was/is the cyclical stress. Every semester the end gets so stressful, overwhelming, and school is so demanding that if your life goes wrong even in the slightest way, you can't do anything because your will jeopardize your entire schooling.
My favorite subject in school was/is Marriage & Family Relationships.
One subject I wish I could have mastered/would like to master is Nutrition. I had the hardest time with this subject - I never understood why.
I could never get tired of studying History. I would have to agree with Lauren on this answer. I never get tired of learning historical facts or new things I didn't know about before. Especially old European history.
The most memorable teacher I had was my high school Spanish teacher Ms Barbato.
If I could choose between going to school for the rest of my life or working for the rest of my life, I'd choose work any day. It goes back to the answer about school being so demanding without allowing things to go wrong in your life. I had a grandmother who was sick in the ICU for three months; school, the assignments as well as non believing teacher's made it unable for me to successfully finish the semester. I finished but with almost all F's. My sister became sick with a still undiagnosed brain condition; school and professors again did not care about the personal stress. And when you need to take a semester off and don't graduate on time people look at you funny and advisors begin to pressure you.
I know this is not usual, but you could not pay me to go back to school. :)