A federal injunction on the Biden administration’s Title IX overhaul may soon extend far beyond the four states involved in an initial lawsuit, and nearly 700 schools across 48 states will likely be affected by the order.

Earlier this month, a federal judge in Kansas blocked the implementation of the new Title IX rules written by President Joe Biden‘s Department of Education, which changed the definition of sex to include gender identities. Critics say the move could effectively shut down sex-specific accommodations, such as allowing women to have their own restrooms that exclude men.