The dreaded B16 gang.
Many members of this gang wear a beaded necklace called in their code a "rosary". Be warned, if this crew should gain a foothold in your public school there will be outbreaks of prayer and obedience to God and acts of charity and loving your neighbor. School administrators will soon lose control of the situation if they don't nip this rosary thing in the bud.
I'm going to rule out my first thought, which was that the principal doesn't know what a rosary is. I don't get it. If I am a teacher and I see a kid with a rosary, I'm thinking that's one kid who won't be giving me any problems.
This young guy's mom is calling the ACLU. I wouldn't be holding my brerath waiting for them.
Sorry the link doesn't let me cut and paste.