My sex ed was one step above abstinence only, and even then the teacher made sure to emphasize at every possible opportunity that abstinence was the only 100% effective method to prevent pregnancies/stds and made sure to really harp on the failure rates of condoms/other methods. I wasn't even shown the banana condom demonstration, we briefly touched on consent and there was nothing on sex/relationships.
Oh and it was pretty much taken for granted that it was for cishet relationships, there was a brief lip service to "1 in 10 people are gay" (inaccurate, and it made sure I didn't realize I was bisexual until my mid 20s since I was attracted to the opposite sex so I must be straight and no need to further examine these other feelings)