Is Saint Augustine High School a Diploma Mill?

Hi, I visited this high school run by John Parnell, is it not in very well condition? I found it on several tries, it is in a neighborhood home. Among the baptism, communion, services they offer is an option to donate money for an immegration letter. That is not legal, correct? The diploma, as a secretary explained, is earned by completing packets, then a test. She says the answers may be given for an amount of money? It makes me uneasy.