Proposition 134 would sort Colorado school and college teams by biological sex
Oct 16, 2026 · 10 min · 9 segments
Oct 16, 2026 · 10 min · 9 segments
The final text filed with the Secretary of State defines a female as a person whose biological reproductive system is organized around the production of ova and a male as a person whose reproductive system is organized around the production of sperm.
It covers public, charter, private, and denominational schools offering elementary or secondary instruction, along with public and private universities, colleges, and community colleges in Colorado that belong to an accrediting body recognized by the U.S. Department of Education.
Every interscholastic or intramural team or sport sponsored by a school or an athletic association would be designated for males, for females, or as co-educational or mixed.
Female teams would be closed to male students, while male teams would be closed to female students unless no female team is offered in that sport, and co-educational teams would stay open to everyone.
The Blue Book, the ballot information booklet prepared by Legislative Council staff, says the measure also reaches after-school programs sponsored by schools.
and does not apply to youth sports and leagues that operate separately from schools.
The measure bars any government entity, licensing or accrediting organization or athletic association from entertaining a complaint, opening an investigation or taking other adverse action against a school for keeping a separate team for female students.
It also provides that a person born with a disorder or difference in sex development must receive all legal protections and accommodations afforded under federal law.
The Blue Book says the measure does not impose a specific method for determining or demonstrating biological sex, so individual schools or school districts must determine their own verification procedures.
The measures text provides that the governing body of each school must adopt a policy implementing the provisions of this article.
Makkernan said that arrangement puts the choice of method with local schools, and that if a school adopted an intrusive method, parents could take their children out of that school.
The final text filed with the Secretary of State defines a female as a person whose biological reproductive system is organized around the production of ova and a male as a person whose reproductive system is organized around the production of sperm.
It covers public, charter, private, and denominational schools offering elementary or secondary instruction, along with public and private universities, colleges, and community colleges in Colorado that belong to an accrediting body recognized by the U.S. Department of Education.
Every interscholastic or intramural team or sport sponsored by a school or an athletic association would be designated for males, for females, or as co-educational or mixed.
Female teams would be closed to male students, while male teams would be closed to female students unless no female team is offered in that sport, and co-educational teams would stay open to everyone.
The Blue Book, the ballot information booklet prepared by Legislative Council staff, says the measure also reaches after-school programs sponsored by schools.
and does not apply to youth sports and leagues that operate separately from schools.
The measure bars any government entity, licensing or accrediting organization or athletic association from entertaining a complaint, opening an investigation or taking other adverse action against a school for keeping a separate team for female students.
It also provides that a person born with a disorder or difference in sex development must receive all legal protections and accommodations afforded under federal law.
The Blue Book says the measure does not impose a specific method for determining or demonstrating biological sex, so individual schools or school districts must determine their own verification procedures.
The measures text provides that the governing body of each school must adopt a policy implementing the provisions of this article.
Makkernan said that arrangement puts the choice of method with local schools, and that if a school adopted an intrusive method, parents could take their children out of that school.
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