The schools know it is coming the young adults were doing it at will, the playboys and debutants first, but faster than anyone could imagine.
Hollywood embraced it, soon any acter or actress under thirdly could play either male or female parts. Movie companies around the world tolled stories about it. A device the size of a tanning bed, Thoe usually sold in sets. Gel full of nanobots could change a male into a female or a female into a male, or into a female with a set of dick and balls or a male with breasts, pussy, hips, womb, and ovaries of a woman as well as dick and balls.
The medical side was quick to come out, people who thought they should be the other sex were able to afford to change sex, those who had gone thru the old way of changing sex were offered a chance to be a fully functioning member of their chosen sex.
Who could operate the device was something of much debate, doctors and nurses who had experience with nano tech, physical trainers at gyms. Spas got the device. Resorts offered sex change vacations, mothers and sons could have mother daughter trips. Coupes could have sex swap trips. single men went on vacations as women as women as men. Clubs that once had tanning beds had the device instead.
It changed criminal prosecution of sex crimes. Stockers and peeping toms were changed to look like their victims. Their was much debate about rapists, but finally it was decided that none murdering rapists could be turned into their victim type and locked in that form for a time and released to live their new lives.
Witness protection was given a new twist as ex gang members and mobsters were given new Lifes as women. Even some conservative groups embarrass opposite sex education.
Some cults embrace the freedom of gender chose, others turn tomboys into real boys and Girly boys were turned into girls/women.
Some couples flip off who had the babies.
The schools decided a gender test was in order, OfCourse they needed parents permission to do anything.