I skipped a grade in primary (elementary in American terms) school and another two in high school. I was in university at 15. It was either that or expell me for continually hitting and abusing people.
As far as my behavioural problems went, they kept sending me to shrinks, none of whom had a clue what was wrong with me (let's just say that, apart from my brain, puberty was not kind fo me), and who only taught me to lie convincingly. An example: one shrink had the bright idea that they could learn more about my brain by making me draw pictures of what had happened instead of explaining it. But I hate drawing, and I particularly hate drawing faces. So it was pain and humiliation. Eventually I learnt to pretend to be normal for an hour at a time in the shrink's office just so they'd get me out of there.
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"She is the new fascination, the cold face of love."