No. We aren't friends so I don't think it appropriate - she should be able to have her private life without having to reject my friend request. If she wanted parents to friend her she would have told us at back to school night.
No..her personal life is none of my business...just as mine is none of her business.
I wasn't friends with any when I worked in Indianapolis because a lot of them were not people I would be friends with in real life. I was friends with parents at the private Christian school I worked at for the past two years though I never say anything about about school/students and I don't post anything inappropriate either so it wasn't a big deal.
After they are no longer my child's teacher and I like them enough to want them on my facebook.
Only two... but one I went to school with and the only I worked with, and both were friended before my girls had them. As a teacher I do not accept requests from parents.