So why is he homeless? Just because he didn't get a job with this degree? Thousands of people don't work doing exactly what their degree is in.
I know school systems need math and science teachers more than ever. Of course, you can't get drunk and high 7 days a week.
Just looking at the State there are two jobs that he could apply for (you need a 4-year degree)
Fish Hatchery Assistant Manager
State Park, Forests, Wild Life Management Superintendent I
Schools in Logan - Roane - Spencer - Eleanor - Hurricane - Auora - all need science teachers