I was subjected to this in a high school gym class. I was in the process of doing pushups when the gym teacher struck me with a leather strap. I picked myself up and walked out of the class into the principal's office and said "do something about this". The gym teacher inevitably apologized fearing a lawsuit.

Literacy doesn't equate with intelligence or clarity of artistic expression. That's why we love folk music. It doesn't require academic prowess. At the same time, traditional folk musicians can be literate.