Got any 13 year-olds? No? didn’t think so. At that age, they used to be just getting the menstrual lecture - no actual sec ed as to how or why it worked that way, really. And could barely handle that much 411. It definitely needed some improvements, but this? Physical functioning may be age-related, but ability to comprehend all the information attached to it often just isn’t there yet.
Look - at that age, they need to understand that sex exists, and a little of how it works so they can understand why it’s important, sure. But…I’m pretty sure a list of what is allowed is sufficient. Anything else? Off the menu. And that exact selection is the parents’ job. So, yeah - I’d raise hell about this one, myself.
Ohhhh, but wait! The school has thoughtfully provided the full menu after all! Lovely.