Impact of dropping a class listed on transcript for preread?

Certainly in a perfect world, the overworked and harried office administrator who sees 100 kids a day in January would advise students of the duty to report changes to college, but alas even at our private school that is not happening.

I’m not arguing with the concept, and I agree with the principle, but I think in reality there are tons of kids and parents who don’t have a clue about this rule.