I took my PA m/c test @ 16 yrs old, the minimum age. I had a Honda 50 super sport that I had been riding on dirt for over a year. The test was so easy on that bike that I could have done it entirely on the back wheel. I actually went to the test site & practiced, got bored & did do it on a wheelie.
But when the time came, I was afraid the examiner might not appreciate my humor so I did it the regular way on 2 wheels, pretending to be careful.
I could only get a junior license until I turned 18 and my family had a motorboat we kept at a marina on Chautauqua Lake, which is in NY State.
There was some rule about NY not allowing those with PA Junior licenses to ride after dark.
I had traded up to a Honda Super Hawk 305 and (since I live very close to the border) "borrowed" a friend's NY State address & took the NY test & got a license there as well, so I could ride after dark (up to midnight).
Not exactly legal but I maintained 2 licenses at the same time until I was 18.
If I had 2 take the test today, I'd use my Yamaha Super Tenere. Its a 1200cc 500lb bike but it sure is nimble!