Well, we had to watch an eductional movie in fourth grade where a woman givs birth, shown with all the gorey details.
FOURTH GRADE?!?
I remember seeing a video about puberty in FIFTH grade, but one where a woman gives birth?!? No way. My parents never would've signed the permission form when I was nine years old.
We didn't even get into actual sex ed classes until sixth grade, and they were given every year, but I only had my parents sign the permission form for the one in sixth grade, and then I took an alternate assignment in seventh and eighth.