I don't know about that specific outfit but the gold standard for those programs is Girls for Sail
that does RYA instruction. Have run into their boats a few times in the Caribbean
and the instructors seem top notch and the students all seem like their having a great time.
That said, if you could give us more information on what you know and what you don't know, and what your goals are we could probably give you better advice on what program would be a good fit. Choosing one based on it being gender-specific might not be in your set interests depending on what it is you want to get out of it.
Where are you located? Are you interested in power or sail? How far do you want to travel as a live aboard? Stuff like that would be helpful.