I have a friend who only had certain clothes "recommended" to the parents and one day they came into class and were obviously counting who was in the "right" clothes and who was not. She got livid when she heard and called the school, asked them if they counted African Americans or Asians, etc. They had made the mistake of saying they were counting the people NOT in the right clothes, thus singling certain children out in a negative fashion. The school board is not "law" just the people you elect are. I don't think they'll "punish" your son, just send a note home or something. I'd have him wear what he wants the first week, see what other parents do? Maybe find him a nice pale yellow shirt and khakis? You know, that first week, nobody's going to be sure they have the right colors/shades or how it all will work and it might break down with most against it, just start sort of close and get worse as time goes by That's what happened in my friend's school.