Name one or few positive things you got out of schooling

May it be interesting things you've learned to valuable friends you've made. Name something you're thankful for, for going to school.

Discuss.
(I will post my inputs when there's a response)

Got me playing guitar and now in a band!
and Friends but only some of them >.>

Realizing how great friends can truely be. From playing games with them to being motivated to pass a big project. Without my closest friend, I wouldn't have passed my Grad Project today and go on to graduation soon. People like them truely have the highest value.

I discovered that the world is a more dreadful place than I predicted, and that the population is filled to the brim with ugly &/or stupid people.

However...I also found that there are actually people who look decent, a fact I would have rebuked virulently over 364 days ago.