You'd expose other kids to that lifestyle? I sent my daughter to Christian school to keep her AWAY from it.
This is tough, but I'm with Walkingfeather, though. Our kids have to learn sometime that being a Christian means reaching out to others. We choose to homeschool for this very reason. I want my kids to learn to reach out to other kids in a controlled atmosphere where we can talk and pray about what is going on.
If the school administration allowed a couple of struggling kids into the community to be witnessed to and ministered to, what is the harm?
Are her mothers teaching in school? Besides you are naive if you think you are keeping ANY KID away from sin by sending them to a Christian School. I went to one of the MOST consevative Christian universities in the country. You couldnt even wear shorts on campus. Swimming with the opposite sex was considered MIXED BATHING. Okay... when I was in college there were drugs of all kinds, I would say 1/2 of all the kids drank to the point of being drunk. The worst ones were either EK's ( elders kids or PK's Preachers kids. Now do you know how many parents had the same attitude as you have now...??? " I am sending them there to keep her or him away from it?
The best thing you can do is pray for your child and have an authentic life. BTW when you are around Christians all the time your faith is not challenged. The weakest point in my faith was when I went to a "Christian" University.