Evidently, you want to be agumentative. I am polite to you and I expect the same.
I agree the parents should be teaching it. But I think parents are too nervous to do it right. Too many parents still ignore sex or just say "don't".
That may be so (and what is 'right' anyway?) but I still don't want a stranger (CCD teacher) teaching my kids about sex or sexual 'part' names. I have the same feeling about 'sex ed' classes in public schools.
If the material is so great how come we never have access to it before it is put in place? Oftentimes, the teachers receive guides/guidelines but there is no printed material in book/handout form. So the bulk of the lessons are outlined but the teachers have great leeway.
That doesn't give anyone else the right to take over that parental prerogative.