It was not brought to his attention, he observed it. These kids are easily identified and thus grouped with other kids assosiated with behavior issues (which they do not) so they are much more scrutinized. They are usually more obedient than normal kids. Trust me these kids are victims of false assumptions all the time, and as a parent its very upsetting. As for the captain he could have been right and had to make a difficult choice, I just hope he didn't make a decision based off false assumptions.