Way back in prehistoric times in Indian Territory days, a 14 year old could get a MC license for a 125cc bike. Sometime during my nautical adventures that was change to 250cc because the 125cc availability had evaporated. I was 15 before I could scrape up enough cash to buy a little Yamaha DT125.
When I was first licensed, it was actually for a motorcycle with 5hp or less. You couldn't have a passenger and had to be off the streets by 2100 IIRC. Because it was so long ago that I got my first Indian Territory MC license at 14 y/o, I may be a little fuzzy on the details. I started on a Yamaha 60, then a Yamaha Trail 100, then onto a Yamaha twin 100 street bike, and then I said to hell with the rules @ 15.5 and bought a Suzuzki X6 Hustler. That started a life of always having at least one motorcycle in the stable. Prior to the license, I had a Cushman scooter and a Vespa, starting around 12 years old.
When I did my first driving test, I went to the DMV, the guy went across the street into the diner for some coffee and I did a figure 8 around and through a 4 square block area. I came back to the starting point alive, so I got a license. That has been the extent of my motorcycle licensing testing to this day.
bob