As far as I can tell, the “problem” is that the dresscode states that the student’s hair can’t extend below his eyebrows or ear lobes “at any time”. So, hypothetically, if this student took his hair down out of the braids, it would be longer than the dresscode allowed.
This, of course, is fucking stupid reasoning. The school probably just doesn’t like this hairstyle - because racism - and is choosing to use an overly literal reading of the rule to try to force the student to change it.
Depending on how long it’s been since you’ve played, they’ve changed the rules probably like between two and five times since then, so you’d have to learn how to play pretty much from scratch anyway!