Personally, I blame the gangs more than anybody else on this. How dare they use religious symbols and bring their war into the schools. That's a rant for another time. Anyway, notice the highlighted part. The Christians got to wear their symbols.
So Smith won. Kids get told they can't wear stuff. Their parents take it to court, and they win. They win.
Now, if you wish to take up for anybody in the schools, take up for the teachers. They're held to a supposedly higher standard.