gumbo's complaint " But none of us who'd signed up ever got a response! " is oh too common. Teachers must pass around their blacklists. Parents have to morph into puppets of the liberal agenda to get invited to volunteer their time at the school for anything, and in order to avoid reparations against their kids.
I have to say, after this happened three times (signing up for "parent advisory" groups, then never getting a response), I started to wonder if I'd been lured into blacklisting myself.