The families of three cisgender female student athletes in Connecticut have sued in an attempt to prevent transgender girls from competing in girls’ sports.

The suit, filed Wednesday in U.S. District Court in Connecticut, asserts that letting trans girls compete against cisgender girls is a violation of Title IX of the Education Amendments of 1972, a federal law banning sex discrimination in education, including school sports.

Girls “are now being directly and negatively impacted by a new policy that is permitting boys who are male in every biological respect to compete in girls’ athletic competitions if they claim a female gender identity,” the suit states. Read more via the Advocate