My mother was one of those teachers that had questionable qualifications. This was a problem from time to time as different government edicts and local authority changes made teachers effectively reapply for their jobs.

Eventually she did get a degree, albeit with my father writing up most of the assignments, however, I was underwhelmed by this. I felt that it was quite an indulgence for just a piece of paper.

Subject matter does matter. My mother was teaching art which might as well have been craft. What she brought to the class was experience, experience in crafts and experience existing as a money-making artist. She also knew a few people.

Few in academia could match her skill set and there were no complaints. It didn't matter that she was practically illiterate when it came to writing.