The U.S. Supreme Court has ruled that states may prohibit transgender girls from competing on girls’ and women’s school sports teams, handing down one of the most consequential decisions for transgender rights since the Court upheld state bans on gender-affirming care for minors earlier this year.
In a 6-3 decision issued Tuesday, the Court upheld laws in Idaho and West Virginia that restrict participation in female school sports based on biological sex. Justice Brett Kavanaugh wrote the majority opinion, concluding that the laws do not violate either the Equal Protection Clause of the Fourteenth Amendment or Title IX, the federal law prohibiting sex discrimination in education.
The cases, Little v. Hecox and West Virginia v. B.P.J., were brought by transgender students who argued the laws unfairly excluded them from participating in school athletics consistent with their gender identity. Their legal teams maintained that the bans singled out transgender students for unequal treatment and denied them educational opportunities available to their peers.
Instead, the Court accepted the states’ argument that separating athletic competition by biological sex serves legitimate governmental interests related to fairness and safety in women’s sports. Writing for the majority, Kavanaugh emphasized that the Constitution permits states to establish sex-based eligibility rules for school athletics.
Justice Sonia Sotomayor, joined by Justices Elena Kagan and Ketanji Brown Jackson, dissented. The dissent argued the majority prematurely rejected the students’ equal protection claims without allowing a full examination of whether the states could justify excluding individual transgender athletes. The justices warned that the ruling leaves transgender students with fewer legal protections against discrimination.
The decision immediately strengthens sports bans already in effect across more than two dozen states and is expected to make future constitutional challenges significantly more difficult. However, it does not require states to adopt such bans. States that currently allow transgender students to compete according to their gender identity may continue doing so unless their own laws change.
The ruling also reflects a broader trend at the Supreme Court, where transgender rights advocates have faced a series of setbacks over the past year. Legal experts say the Court’s conservative majority has consistently given states broad authority to regulate issues involving transgender Americans, including health care, military service, and now school athletics.
The decision has prompted difficult conversations within LGBTQ+ legal organizations as well. Some advocates have questioned whether every transgender rights case should be brought before the current Supreme Court, arguing that unfavorable rulings risk establishing nationwide precedents that are harder to reverse than individual state losses. Others counter that declining to challenge restrictive laws would leave discriminatory policies untested and unopposed.
For transgender students and their families, the ruling represents another narrowing of federal legal protections at a time when participation in school sports has become one of the country’s most politically charged issues. While the legal battle over transgender inclusion is far from over, Tuesday’s decision will likely shape both legislation and litigation for years to come.

