Trevor Wilkinson, 17, suspended for wearing nail polish to Texas High School
Girls at that school are permitted to wear nail polish.
You can sign Trevor's Change.org petition at https://www.change.org/p/anyone-and-everyone-allow-males-to-wear-nail-polish
It's clearly sexism, and most likely homophobia too.
My high school allowed girls to wear skirts, but boys had to wear pants.
Reminds me of when a group of boys wore skirts when it was too hot, because they could not wear shorts.