Yes, and it's a bloody nightmare!! Started by two mom's last year, it's a private group which does not use the school name just the acronym so it's "parents of xyz".
Not supposed to be endorsed by the school, and has had many complaints from parents especially those whose children photos have gone up on it, and they have specifically withheld permission from the school publishing any of their kids pics. The school despite saying they would speak to the admin concerned have done nothing. All that has changed is that their is a disclaimer on the Facebook info page saying that if you don't want your kids photo up let them know... Problem is a lot of the parents that don't want their kids pics up aren't on Facebook anyway!!!
There has been in fighting amongst the moms when pics from social events were posted and they weren't invited etc etc.
Cherry on the top, I got kicked out with no notification because I unfriended the sticky beak mom personally who is an admin, despite my child going to the school. The mom whose kid left in the first term... Well she still is part of the group!