Are there stories out there where the male protagonist must crossdress to sneak into an all-girls school because he wants to be a hero and learn magic and fight evil in a world where only women are allowed to learn magic because of the arbitrary and nonsensical beliefs of an insanely sexist dogmatic society?
What about stories that remove the magic element, but lying about who he is to the point of crossdressing is still something the protagonist has to do to get what he needs or wants?