My daughter is 14 The headphones like I said don't have to be connected to anything at all, they may be enough on their own to muffle intrusive sound.
As far as the vest thing, keep in mind, it's not today you have to always worry about, it's the same kids in class who remember today down the road, and all the time in between. I know, been there, done that, still doing it.
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Bunni
That which doesn't kill me, makes me stronger, and really pisses me off.