To the contrary, if Shakespeare were still alive, this is exactly what he would be doing. Almost all of his plays retell a story originally written by someone else. (The exception is The Merry Wives of Windsor, where he just reused his own characters from Henry IV.)
JOOTG was about a female journalism student who went undercover as a boy to another high school. She does fall in love with someone who knows her only as a boy but thre’s no one who goes missing, no pretending to be an existing other person, etc.
Actually, I was thinking more along the lines of Kill Bill or House of 1000 Corpses.
Titus Andronicus seemed to be Shakespeare trying to be as utterly brutal as possible and pretty much disregarding any logical character development to get there.
As for Twelfth Night, it seems ready-made as an adaption into a teen movie, unlike say, Othello or Hamlet. I’ve often though that MacBeth could easily be transferred into the “teenage angst drama” genre as well, but I fear that I might find myself at the wrong end of a character defamation suit should I too closely portray someone from my past history in the role.
Capo, and matrone, to run your mouth about what being a boss is about, what duty is, why day is day and night is night, why we got time and all that, that’s nothing but a waste of night, day and time. Since wiseguys talk straight, and I don’t want to wear myself out, I’ll get to the nut: your bright boy is oogatz: I say “oogatz,” because what’s oogatz? It’s just oogatz. Fuggetaboutit!"