This is what 12 famous celebrities were like in secondary school

Believe it or not, celebrities were once children too. Better children, with much better genes, prospects and personalities, but children all the same.

And wouldn't it be interesting to find out how our favourite celebs got on in their youth? Yes. Yes it would. That's why Reddit imu30 started a thread encouraging their past teachers to dish the dirt.

Check out the thread here - and check out the best of the lot below...

Benedict Cumberbatch

Rob McElhenney

"The principle of my old high school taught Mac from Always Sunny while he was in high school, he said he was exactly how you would expect, a trouble maker and a smart-ass, but surprisingly he sucked at theater and school plays."

John Travolta

Michael Phelps

Kanye West

LeBron James

Matthew McConaughey

Bill Murray

J K Rowling

John Green

Nicholas Cage

Leonardo Di Caprio