As a former teacher, I sympathize a little with the school here. Parents, especially white parents have far too much power over school admin. Admin simply cannot force parents or students to do things, even if it’s for their own good or the good of other students. I was frustrated by this for 27 years. The only thing they could have done is called the police to search his bag. Perhaps they should have done this, but hindsight is 20/20, as the saying goes.