Supreme Court Upholds State Bans on Transgender Athletes in Girls' Sports, Extending Sex-Based Classifications

On June 30, 2026, the U.S. Supreme Court issued a 6-3 ruling in West Virginia v. B.P.J. (consolidated with Little v. Hecox), holding that states may restrict participation in girls' and women's school sports to biological females as determined at birth. Justice Brett Kavanaugh wrote for the majority, concluding that neither Title IX nor the Equal Protection Clause of the Fourteenth Amendment requires schools to allow biological males—even those who have undergone hormone therapy or puberty blockers—to compete in female categories. The decision reverses lower court rulings from the Fourth and Ninth Circuits and builds directly on the framework from last year's United States v. Skrmetti case, treating sports eligibility as a permissible sex classification rather than impermissible discrimination based on transgender status.

The cases involved Lindsay Hecox, a biological male seeking to compete on Boise State University's women's track and cross-country teams under Idaho's 2020 Fairness in Women's Sports Act, and B.P.J., a biological male identifying as a girl since third grade who challenged West Virginia's 2021 Save Women's Sports Act after competing on girls' teams. Approximately 27 states have enacted similar laws prioritizing biological sex for competitive fairness, safety, and preservation of opportunities for biological females, citing average physiological advantages in strength, speed, muscle mass, and bone density that persist post-puberty.

Oral arguments on January 13, 2026, highlighted tensions between sex-segregated categories long accepted under Title IX regulations and claims of equal protection violations. The majority emphasized that states need not provide individualized accommodations and that transgender males may generally compete on boys' teams. Dissenting opinions from Justices Sotomayor, Kagan, and Jackson argued partial violations of equal protection.

This ruling signals broader institutional shifts toward biological sex as the operative category in public institutions, from education and athletics to medicine and prisons, amid ongoing debates over data on competitive advantages and policy consistency across states.