Children are heading back to classes and fall sports practices, and four more states are expecting their K-12 schools to keep transgender girls off their girls sports teams.

As children across the U.S. head back to classes and practices for fall sports, four more states are expecting their K-12 schools to keep transgender girls off their girls teams.

Kansas, North Dakota and Wyoming had new laws in place restricting transgender athletes before classes resumed, and a Missouri law takes effect at the end of this month, bringing the number of states with restrictions to 23.