US classes are:

B - 0-14
A - 15-21
AA - 22-29
AAA - 30-35
INT - 36-40

My prediction has already come true and I can't shoot US-AAA already. Wow, don't know how I promoted myself so fast!!!! I will tell the MD I posted the wrong class on my card. Thanks for the heads up but that will just make me try harder or at least try to find more luck next match.