I understand what you’re saying, it’s so hard. And 14yo kids don’t want to stand out in any way, I know my kid practically has a fit any time I even think about calling the teacher! I find the important thing is to give your kid the context that school isn’t giving him - the crime rates, the drug use, and the broken families that (imo) are the foundation of it all. Above all, make sure he learns not to judge people by the colour of their skin.