The whole “we-need-sex-education-in-schools” thing is a straw man.
The real agenda here is to expand the unions by forcing additional non-essential curriculum on all of the students in America. This would increase teachers’ union members, increase the school budgets, etc. No different than the “we-need-smaller-classrooms” argument. It’s all about money and expanding the teachers’ unions.
It’s isn’t about sex, but then again, the Left can’t really gin people up by demanding, say, mandatory pottery classes or rug weaving.
Mandatory preschool and “small class sizes” are another way the unions try to expand their ranks.
EVERY argument the left uses for sex education, abortion, homosexuality, etc. has ALWAYS been a straw man.