School uniforms would easily solve problems like this.
I agree, but then you'd have the ACLU calling out massive discrimination against "freedom of expression."
That's where the state should step in and remind the ACLU that the students are in a controlled environment and "expression" is not a right the students have. Hence the reason why there are already existing dress and conduct codes.
You're totally right, MODU. The whole 'freedom of expression' thing with respect to school is a red herring. School is and has to be a controlled environment if any learning is to take place.
Of course, the liberal education policy since the 1960s has been to remove all ability from the schools to control the environment, then lament the fact that proper education is not taking place as a result of that (as well as other things supported by liberals, like unaccountability for incompetent teachers and administrators), and demand more and more money to be spent on education as a 'cure' for the problems they created in the first place.