I'm honestly not looking to be incendiary and I hope my post came off as respectful, not just conveying "annoyance," as mconlonx phrased it.
I think the school bus analogy is a good one. And, as far as inconveniences on the road go, it's probably right to say that cyclists are low on the list.
Mconlonx: to answer your question, however, if I felt like I had a valid opinion about a road situation that involved schoolbuses and the safety of their passengers or myself, I would absolutely consider joining a PTA forum to discuss it in a respectful way.