# Supreme Court set to rule on trans women in sports > A case on the shadow docket could force all states to ban trans women from women's sports, even those that support inclusion. - Title: Supreme Court set to rule on trans women in sports · Vox - Summary: A case on the shadow docket could force all states to ban trans women from women's sports, even those that support inclusion. The Supreme Court is… - Keywords: supreme court, transgender rights, women's sports, shadow docket, title ix, k.m.k. v. washington interscholastic act, alliance defending freedom, washington state, mirabelli v. bonta, west virginia v. b.p.j., news, culture - Source: Vox — https://vox.com/politics/507025/supreme-court-kmk-washington-transgender-sports - Author: Ian Millhiser - Published: 2026-10-20T19:35:00+00:00 - Read time: 4 min - Topics: supreme court, transgender rights, women's sports, shadow docket, title ix, k.m.k. v. washington interscholastic act, alliance defending freedom, washington state, mirabelli v. bonta, west virginia v. b.p.j., news, culture ## The shadow docket explained The Supreme Court's shadow docket allows justices to decide cases quickly, often without full briefing or oral argument.Historically the Court would let contentious issues develop in lower courts for months or years before deciding them. ## The case: K.M.K. v. Washington K.M.K. v. Washington Interscholastic Activities Association has arrived on the shadow docket. The plaintiffs effectively want the Supreme Court to bar transgender women from women's sports teams at high schools and universities. ## The assault allegation One plaintiff is a high school women's wrestler identified only by initials because she is a minor. She claims a transgender wrestling opponent forcefully penetrated her vagina with her fingers during a match. ## Prosecutors declined to charge The local prosecutor's office decided not to prosecute, concluding it could not prove a sex crime beyond reasonable doubt. The referee who officiated said nothing stood out during the match. ## School investigation ongoing The school district says it has reviewed video of the match and interviewed both competitors. Its investigation into the allegation is still ongoing. > still ongoing ## Why the Court should wait The case involves novel legal arguments that could make broad pronouncements beyond previous precedents. One argument could potentially make it impossible for any school athletes to participate in competitive sports. ## The West Virginia precedent In West Virginia v.B.P.J., the Supreme Court held that judges should not decide which athletes may compete on women's sports teams. > The legislatures and the schools are better equipped, and under the Constitution, are the more appropriate entities, to assess the competing medical and scientific considerations and draw appropriate lines. ## B.P.J. allowed state bans West Virginia v. B.P.J. rejected a constitutional challenge to state laws forbidding trans women from playing on school sports teams. But it did not decide whether states must allow trans women to compete. ## K.M.K. seeks the opposite A victory for K.M.K. plaintiffs would likely establish that no state may permit trans women to compete on women's sports teams, regardless of what the people of that state want. ## The Court's track record This Court is often skeptical of trans rights claims and usually resolves disputes between cultural liberals and religious conservatives in favor of the religious right. But it has respected states' rights on abortion. ## The plaintiffs' legal arguments The Alliance Defending Freedom, a Christian right law firm, raises two arguments. It claims Title IX implicitly requires schools to have sports teams only cisgender women may play on. It also cites Mirabelli v. Bonta. ## Title IX is not indisputably clear In West Virginia v. B.P.J., the Court held it was not deciding whether schools may allow trans women to participate on women's sports teams. So that legal question remains open and is not indisputably clear. ## Mirabelli was thinly reasoned Mirabelli v.Bonta is an unusually thinly reasoned decision.The Court held schools must out trans students based on parental authority, but the analysis was just one paragraph long and had nothing to say about sports. ## The parental authority problem The Court has never held that a parent's right to direct their child's upbringing includes a right to dictate which rules school sports teams will use. ## Sports cannot function that way Competitive team sports simply cannot exist if one player's mother is allowed to demand changes to the rules that neither the league nor the other players support. > Competitive team sports simply cannot exist if one player's mother is allowed to demand changes to the rules that neither the league nor the other players support. ## Washington classifies by gender identity Washington schools do not discriminate on the basis of sex assigned at birth.They classify athletes on the basis of gender identity. ## Title IX regulations allow sex segregation Federal regulations implementing Title IX provide that schools may operate separate teams for members of each sex where selection is based on competitive skill or the activity is a contact sport. ## The Court should decline to decide now At this early stage in litigation, the Supreme Court should decline to decide K.M.K.because the plaintiffs' legal rights are not indisputably clear.The Court should send the case back to lower courts to gather more information. ## But the Court may rush ahead This Court is often impatient in culture war cases. Mirabelli was also a shadow docket case, but the Court's Republicans invented a new legal rule compelling teachers to out trans students without full deliberation. ## The risk of a hasty decision There is a serious risk the Court will rush to decide K.M.K. before fully considering legal arguments on either side, or even learning whether the shocking allegations raised by plaintiffs have merit. ## Key takeaway The Supreme Court is considering K.M.K. v. Washington Interscholastic Activities Association, which could require all states to ban trans women from women's sports teams, overriding state policy choices.