My high school did that too -- it was all-girls and Catholic, but it was in the 1990s.

Of course, in a different class they showed us films of abortions being performed, so it all sort of balances out. I was a politically aware fifteen-year-old so I found the latter really manipulative. (Especially the one with the talking chipmunk-voiced fetus. I mean, I'd have thought that the TCVF would have made the film's protagonist WANT to get an abortion.)