The California Department of Education on Tuesday weighed in on the escalating controversy over transgender athletes in school sports, advising schools to hold the line in the wake of threats from the federal government.

Days after a transgender high school athlete won two California track events, the Trump administration is threatening legal action.

In February, Trump signed an executive order titled “Keeping Men Out of Women’s Sports,” which gave federal agencies the ability to penalize schools for allowing transgender athletes to compete — something the Trump administration says violates Title IX, the federal civil rights law that prohibits sexual discrimination.