His hairstyle is "commonly or historically associated with race", so it's covered under the crown act. His hair was in a very common style with a long association with his race for centuries. The law doesn't allow for discrimination for typical hairstyles, it doesn't give any leeway to discriminate if the superintendent thinks it should be shorter.
I teach in TX, so this is more than just a headline to me. I'm so tired of having students that are scared to come to school because they might be bullied by teachers and administrators.