You don't even have to be USPTA certified to be considered a "teaching pro" by ALTA. A friend of mine missed out on a whole season because he gets a few dollars an hour and free court time by helping out with group drills a couple nights a week. Ridiculous.
If you receive monetary compensation for teaching/coaching tennis, you are a "teaching pro" according to ALTA and must play AA (unless over 55).
The saddest part is that is was actually a "friend" of ours who called it in to ALTA.
Oh, our team failed to win a point this weekend. I was the only line to even win a set. Doubly ridiculous when my over-55 "teaching pro" partner couldn't make easy volleys or take more than 2 steps for a ball, we should have won it in 2 sets easily...