The YMCA program ended in 2008 and was continued independently as SEI.I was chosen as an assistant instructor and the cert they had was YMCA ( does YMCA even have a SCUBA certification program anymore?)
I don't know much about the old YMCA program but I read years ago that one of its problems was that the local shops were fiercely independent about instruction, so what happened in YMCA #1 might be different from YMCA #2.