one prominent trainer tells me that women make up less than 3% of his classes. That's at one extreme. Another prominent trainer tells me that women make up more than half of his classes these days, and that the number is still on the rise. That's the other extreme.
Have you been to the two instructors classes and seen how they act/train? I have not been in many training classes, but I have seen several instructors who were quite competent instructors for males but were very simply... ... ... ?horn dogs? when interacting with female students.
How many female instructors are there? I took golf instruction for years. One on one I always had male instructors. At camps I would often have female instructors mixed in. The female instructors always had a much different perspective than the male ones. THe male instructors were much more beneficial than the female.