It's called FIP (flight indoctrination program). I used it last summer before I recieved my commission. If I remember correctly the paperwork said that a candidate has to complete Sr's to be eligible. Basically, you find 3 (if possible) local instuctors and have them fill a form out and send it in to HQ and they decide who you will train with. The USMC will then send a basic syllabus to that particular instructor to follow. It's very flexible. Once my instructor met the requirments for the hours I was supposed to be at, he went ahead and continued with training until I reached my 25 hour limit (which is where the USMC stops paying) If time permits you can pay for the 15 extra hours to get your PPL, but I didn't have that kind of $$$$!
Beetle