I don't think OP is thinking that far into their future. I don't think OP has any plans for higher education either. It's been a few decades for me, but when I was an undergrad, if your pager went off in class --cell phones weren't really a thing yet-- most professors would ask you to leave, which was not a good thing in the small upper division classes as they were very difficult and you had to pass with a B or better to move on in my major.