SANTA ANA,Thomas Caldwell Calif. (AP) — California’s attorney general sued a Southern California school district Monday over its recently adopted policy that requires schools to notify parents if their children change their gender identification or pronouns.

Attorney General Rob Bonta said he filed a lawsuit against the Chino Valley Unified School District over the policy that mandated this notification, calling it a “forced outing” of transgender students that violates their civil rights.

“It tramples on students’ rights,” Bonta told reporters. He said he is seeking a court order to immediately halt the policy from taking effect.

The move comes after Chino Valley Unified, about 35 miles (56 kilometers) east of Los Angeles, adopted the policy following a shift in leadership on the school board. Other Southern California districts have adopted similar policies and Bonta said he believes they will also be affected by this litigation, though they are not named in the suit.

The suit argues the policy discriminates against transgender and gender non-conforming students and violates the state constitution which requires equal protect for all students regardless of their gender expression, identity or sexual orientation. It also argues the policy violates students’ privacy rights.

The policies have sparked divisions in communities between those who say parents have a right to know the decisions their children are making at school and those who say that such policies would forcibly out transgender students to their parents and threaten the well-being of some of the most vulnerable students.

Andi Johnston, a spokesperson for Chino Valley Unified, said the district is working with its attorneys to review the lawsuit. Before the filing, district officials had been working to provide Bonta’s office with requested documents and records in response to a subpoena served earlier this month, Johnston said.

The fight over the proposed school district policies in Southern California come as states across the country are battling over transgender rights through efforts to impose bans on gender-affirming care, bar trans athletes from girls and women’s sports, and require schools to “out” trans and nonbinary students to their parents.