I think so (disclaimer - i am on the PFA and very much fit into the following stereotype).
Our school is quite middle class i suppose (or at least people like to think it is). However, most of the people on the PFA are slightly rougher round the edges, salt of the earth types. Especially the ones who actually get on and do the donkey work, as opposed to those who sell a few raffle tickets and think they have single handedly saved the school playground from condemnation.
Oh and its bitchy, VERY bitchy - i have never known anything quite like it.
What are the PFA members like at your school?
Our cake making guru is lovely though and makes the bestest cakes in the world - no ldc or but potentially a CFC