I don't recall it being particularly great, although by comparison it was probably more comprehensive than today's students receive in class.
As I recall, the curriculum was more based in science than in social experience. Probably designed to make sex less a part of our lives than it already was. In doing this, though, I think that made the info seem less real and less likely to be put into practice.
I'd say the level of information was standard, although there was a decidedly heteronormative bent, but that could be more from the demographics and attitudes of the students in class.