I have scarred ear lobes from 5th grade when my principal ripped pierced posts out of them because no student could have pierced ears.
I have a scar on my shin from a small explosion in 7th-grade science. Also an acid burn from the same science class.
I have a cracked toenail that has never grown in one flat sheet, but in small broken pieces from being bitten by a snapping turtle while I was swimming. I tried having it removed but it grew back still broken
All before high school graduation. lol