WASHINGTON — The Supreme Court on Tuesday upheld laws in West Virginia and Idaho that forbid transgender athletes from competing on girls’ sports teams.
In a 6-3 decision, the court said the federal Title IX law envisioned separate teams for girls and boys based on their biological sex at birth.
“Separate sports teams for biological males and biological females are reasonable,” said Justice Brett M. Kavanaugh. “Given the inherent physical differences between the sexes, allowing only biological females to play on women’s and girls’ teams can reduce the risk of physical injury and ensure fair competition.”
Kavanaugh, who has coached girls teams for many years, said 27 states have adopted laws prohibiting transgender athletes on girls teams.
But his opinion does not say states such as California must changes their laws that forbid schools from discriminating based on gender. Instead, he stressed states are free to make their own decision.
“Consistent with Title IX and the Equal Protection Clause, we hold that the states may maintain women’s and girls’ sports for biological females. They may determine eligibility for women’s and girls’ sports based on biological sex. The Constitution and Title IX do not require an overhaul of women’s and girls’ sports throughout America,” Kavanaugh said.
Justice Sonia Sotomayor dissented in part. She said the state should have considered transgender students on a case-by-case basis to decide whether they had an unfair advantage. Justices Elena Kagan and Ketanji Brown Jackson dissented as well.
The sole plaintiff in the court case was Becky Pepper-Jackson. Now 15, she has carried on a lonely legal fight to compete on her school’s track team in Bridgeport, W. Va.
Designated male at birth, she says she is the only transgender girl competing in her state and has been the target of complaints and protests.
In middle school, she participated in cross-country as a sixth-grader and described herself as slow. She “routinely placed near the back of the pack,” her attorneys told the court.
But upon reaching high school, she has been winning.
In 2024, she “placed in the top three in every track event in which B.P.J. competed, winning most,” the state’s attorneys said. In the spring of 2025, “focusing on strength events, B.P.J. bumped female competitors out of the state tournament, then placed third in the state in discus and eighth in shot put while competing against much older female athletes,” they told the court.
Her attorney, Joshua Block of the American Civil Liberties Union, said she has been winning in the shot put and discus “through hard work and practice.”
He said she “received puberty-delaying medication and gender-affirming estrogen that allowed her to undergo a hormonal puberty typical of a girl.”
