It makes just as much sense for a feminist to talk to a group of guys as it does a group of girls. The message I believe (when done correctly) is supposed to support equality by pointing out places where things are obviously wrong. I know little on the matter, but basic statistics I *do* know suggest it is an important movement.
I don't think the idea in general needs you to directly "not hate women".
However I can also completely side with you on a slightly different front. If I don't need the information and it is mandatory, then they are wasting my time. Don't waste my time, school. >:|