AUSTIN, Texas — Texas and 10 other states are suing the Obama administration over its directive to U.S. public schools to let transgender students use the bathrooms and locker rooms that match their gender identity.

The lawsuit announced Wednesday includes Oklahoma, Alabama, Wisconsin, West Virginia, Tennessee, Maine, Arizona, Louisiana, Utah and Georgia. It asks a North Texas federal court to declare the directive unlawful in what ranks among the most coordinated and visible legal challenges by states over the socially divisive issue of bathroom rights for transgender persons.

The Obama administration has “conspired to turn workplace and educational settings across the country into laboratories for a massive social experiment, flouting the democratic process, and running roughshod over commonsense policies protecting children and basic privacy rights,” the lawsuit reads.

Many of the conservative states involved had previously vowed defiance, calling the guidance a threat to safety while being accused of discrimination by supporters of transgender rights. U.S. Attorney General Loretta Lynch has previously said “there is no room in our schools for discrimination.”

The White House had no comment on the lawsuit. The Justice Department said it would review the complaint and did not comment further.

Texas’ lieutenant governor has previously said the state is willing to forfeit $10 billion in federal education dollars rather than comply. The directive from the U.S. Justice and Education Departments represents an escalation in the fast-moving dispute over what is becoming the civil rights issue of the day.