My grandkids love the program. As I said before, a socially awkward boy enjoyed Cotillion so much that he applied to work for them when he aged out. He didn’t get chosen (and was crushed) but he went on to other pursuits where he has overcome much of his shyness. Of course, most girls really enjoy the dances because they get to dress up.
I went to a similar program in CA when I was in HS, but my kids (raised in TX) did not have any such opportunity during the 1970s. I don’t think that my other grandchildren had these programs in NY, KS, & SC. (There could be a program in SC, and I just don’t know about it because they are so involved with Scouts.)
We made do with 6 weeks of square dancing in 9th grade gym class.