Oh Marcy! Haven't you been around here long enough to have read thread after thread where parents say this is NOT what they want for their kids. (I'm sure they really DO NOT want it for an 11, 12, 13, 14, 15 yo...but older kids...) the mindset of, "Would you buy a car without test driving it first?"
.

I don't know anyone who does a purity ring thing around here, but the whole concept of an 11 year old girl making a decision at this point in her life to abstain from sex is not bad in my opinion, and I don't get why any parent would think it's a bad thing. Especially knowing that there are 11 year olds having sex. I am a leader of an 8th grade girls small group at my church, and I know what is going on these days!
I think that this situation requires a lot more than a ring- it requires good, frank conversation between the parents and the child- an ongoing dialogue- and the parents should be supportive of the child's choices whether they agree with them or not. I don't understand why a parent would not want abstinence for their tween/young teen (and I will even go so far as to say older teen!)