AUSTIN, Texas (AP) — Advocacy groups filed a federal lawsuit against Texas on Tuesday, alleging that Hispanic English language learners are having their civil rights violated by not receiving adequate instruction in high schools statewide.

The Mexican American Legal Defense and Educational Fund filed a 27-page complaint on behalf of the League of United Latin American Citizens in the Eastern District of Texas. It argues that the state is violating the Equal Educational Opportunities Act of 1974, which says no state can deny students educational opportunities by failing to “take appropriate action to overcome language barriers that impede equal participation” in instructional programs.