I think it is more of age thing than a sex thing at that age. When I started teaching as a assistant instructor I was around 17 or 18(cant remember was long ago I had some trouble with kids but eventually I got it worked out and I am a full time instructor today.

In my experience the women have more of a problem with new male adult students. That being said once the student learns that the ladies are just as good as men they get with the program:)