I would be careful though. I don't know if its happening below the college level or not but some "Catholic" colleges are officially promoting homosexuality. It wouldn't suprise me in the least to find such a thing happening at the high school level in some places.
Our diocesan Catholic schools have both sex ed as well as an offensive "AIDS curriculum" that begins in kindergarten. Not even our public schools have the latter, and our diocese does not allow parents to opt out their children! The local "Christian" private schools are both implicitly and explicitly anti-Catholic.
As I said: Homeschool!