Proposition 134: Male and Female Participation in School and Collegiate Sports
Proposition 134 on Colorado's November 3, 2026 ballot (a statewide measure). Passes with a majority of votes cast. Plain-language summary of what YES and NO mean, with sources.
Would require every school-based team or sport, from elementary school through college and including intramural and school-sponsored after-school programs at public, charter, private and religious schools, to be designated for biological males only, biological females only, or coeducational. Biological females may join a male-designated team if the school offers no equivalent female team. The measure defines biological sex by reproductive cells, sets no method for verifying it (schools and districts decide), and bars government bodies and athletic associations from investigating or penalizing a school for designating a team female-only. It does not apply to youth sports outside schools. A YES vote: Every school-based team or sport must be designated male, female, or coeducational, and students must compete on a team matching their biological sex or a coeducational one. A NO vote: Schools, districts, and athletic associations continue to set their own eligibility policies, consistent with current state and federal law (Blue Book quick reference). It passes with a majority of votes cast. This explanation was prepared with AI assistance and compared with the official Blue Book by an automated process; no person has signed off on it. Confirm details with the official sources.