Private trade schools have ripped off huge numbers of people, and it seems like you are one of them. Sounds like you went to Trump University for sound engineer training. I just finished a semester long audio engineering class at a local community college. Cost about $250. We met 5 hours a week. And got a good introduction to the field. Didn't get as much hands-on time as I would like, but we did all get a chance to learn pro-tools, produce and record 3 or 4 in-house projects, record 3 concerts put on by other student groups, set up and use 7 or 8 different mics, work with the gobos, professional effects equipment, preamps, midis, patch panels, etc.... No one promised us employment, but we all learned a lot.