(from a post over at the frog pond)
one set of important things to me was languages, and i learned more by visiting friends in those countries and by being penpals between visits than I did in school. i finally have an understanding of grammar having taught myself Latin in adulthood (don't ask why. It was important to me as part of a creative project)
other important thing: maths. school maths sucked. I had private tuition with a friend of my parents, leading to a qualification beyond what school offered.
most important thing: music. school music was always a joke. I went to a private music centre on saturdays where i got both practical and theoretical training to a very high standard (i could have gone to a conservatoire at 18 if I'd chosen that route)
the sport i love(d) is/was swimming, and my school to 16 didn't even have a pool, so I had to flail around with hockey sticks rather than doing what i actually enjoyed. the closest i have got to a hockey stick since leaving school is playing ice hockey on frozen ponds using ice axes as sticks and a terry's chocolate orange as a puck. but i digress.
so... school was peripheral.
school friends - i am in good contact with two people from school. we have shared interests which have nothing to do with school. several of my closest childhood friends were not at school with me, including my very oldest friends who i have knwn since babyhood and was never at school with.
it was just such a waste of TIME, and the really exciting learning was happening elsewhere