I think the problem is, first, that it's wrong, and stupid as well. Condoms are not medical treatment for a disease, they are an invitation to get STDs.
But also, most parents sign such consent forms because they want their kids to be able to have an aspirin or a tynenol without having to wait a couple of hours before someone gets parental permission. They assume common sense and good will on the part of the school authorities--which, perhaps, as this article shows, was stupid of them.
This is the only middle school in the district that has a health center, presumably because of the high proportion of “free lunch” students, whose parents aren’t providing much of anything for them. Even prior to this new range of services being offered, barely a quarter of the school’s students were enrolled in the health center. Probably there’s a separate school nurse, comparable to what the schools with no health centers have, who can dispense things like Tylenol and medications that have been prescribed by an outside doctor. Either that, or even before the BC offering, three quarters of the parents didn’t want their kids to be able to get a Tylenol or be given their prescription medications at school.