No. Usually 1 or 2 riders. But all the 30+ guys complained about OMA not having an A class for the battle and having to race some fast 30+ guy.
Honestly, all the extra classes are not needed. The only class I agree with (and bang on me if you wish, because my son rides it), is the school boy 1 class. OMA just runs schoolboy with 250Fs allowed in the class. I prefer schoolboy 1 (100-150 2 strokes) because it promotes kids going to a 125 from an 85 before getting on 250F. Also for big kids like my son, at 12 years old, gives him a class to run against other 125s. I think we should encourage kids to use 125s as a stepping stone to big bikes. With the new age 14 rule for 250fs, even more reason to have the schoolboy 1 class. Personally, I would eliminate schoolboy 2.
THE PARENT IS THE ONE TO BLAME FOR BUYING A KID A 250F INSTEAD OF A 125!!!! I watch plenty of kids beat 250F's on a 125 so theres no excuse for it. Heres a prime example for ya, Jonathan Lilly or Trevor Maley. Also like Georgie said, they have a 125 class.