If you ever worry about not getting the marks you need at school you're not alone - Prince Harry says he worries if he'll ever make it as an Army pilot.
The 24-year-old says he sometimes wonders whether he's got what it takes mentally to get through the "intense" flying courses he's doing.
"I hope I've got the physical skills to fly a helicopter, but mentally there are the exams and everything," he said.
"I mean, I can't do maths, I gave that up when I left school."
It's not all bad though. One thing the prince is really enjoying about his training is getting to live with his older brother, Prince William, who's training to be an RAF rescue pilot.
The charity polo match raised cash for Prince Harry's Sentebale charity
"We hardly ever see each other and now we are living together and it's fantastic," he said.
The pair are sharing a place at RAF Shawbury in Shropshire and it sounds as if Harry has got it made...
"[William] does most of the cooking. I spend time just lying around watching TV and doing my work.
"The RAF don't have to work as hard as the Army," he joked.
Prince Harry gave an interview to mark the end of his trip to New York - his first official job in a foreign country.
During the two-day visit he's visited Ground Zero in New York City, where two skyscrapers were attacked by terrorists on 11 September 2001, and been meeting soldiers who've been hurt fighting in Iraq and Afghanistan.
He's also taken part in a special polo match to raise money for his own charity, which looks after children in Africa.