Best defense against a larger male trying to rape you? Step one, do everything you can to avoid the situation. Step two, carry mace. Step three, get a gun and friggin learn how to use it.
Unfortunately, with the element of surprise, much more strength than the victim, and the threat of death if the woman (or man) refuses to comply, the odds are normally stacked against the victim. No casual KF, MMA, TKD, or anything else will change that. It would take some dedicated training on the part of the female to even the playing field to any degree.
As for the school. Good advertising, excellent use of A/V to excite the consumer. Approachable teachers, excellent facilities, and family oriented. They also offer a wide variety (quality irrelevant considering the target audience) of MA. Most Americans just want their kids to avoid becoming obese. They don't want ninja munchkins running around the house.
He self proclaimed himself a master? Yeah, like THAT doesn't happen very often...
The weakest of all weak things is a virtue that has not been tested in the fire.
~ Mark Twain
Everyone has a plan until they’ve been hit.
~ Joe Lewis
A warrior may choose pacifism; others are condemned to it.
~ Author unknown
"You don't feel lonely.Because you have a lively monkey"
"Ninja can HURT the Spartan, but the Spartan can KILL the Ninja"