My wife is a class mother in all of our children's classes. She finds that it's a wonderful way to get to know our kids' classmates and parents better, as well as a way to have a better insight into the workings of the schools that our kids attend.
One thing that always frustrated my wife was that in my son's school, they never give out a class list to the parents. My wife gets the list because she is the class mother, but if not for that, she wouldn't get one.
She was speaking to the head of the PTA at our sons' school last night to confirm that she wanted to be the class mother again. While she had her on the phone, they got to talking about class lists and the fact that the school doesn't distribute them. While the PTA head didn't know why our school doesn't distribute it, she gave us an insight into antother school's reasons for not distributing class lists. The reason this other school didn't do it was because at one time they did, but some parents became upset. Not over privacy issues, mind you, but over the fact that they felt that distributing the lists would cause certain kids to want to be friends with other kids, and they didn't want their kids to be unduly influenced by these other (presumably less worthy) kids.
Aside from the fact that such thinking is utterly provincial and backwards, it's also one of the stupidest things that I've heard on the face of the earth. You're sending your kid to a school where the kids spend eight to eleven hours together per day, six days a week (maybe Sunday is only half a day) and you're worried that an hour spent together out of school is going to cause your kid to be unduly influenced by this other kid? If you're that concerned, don't send your kid to school with other kids that you don't approve of!