Some schools offer non-degrees and/or the ability to audit a class. I can apply to be a non-degree student at the local college. Then audit a class for free (no

Some schools offer non-degrees and/or the ability to audit a class. I can apply to be a non-degree student at the local college. Then audit a class for free (no credit/grades). The scope of auditing depends on the professor, I've had some that will grade coursework for non-degree students, others just let them into the lectures. Total cost would be like $25 + books.