Proposition 134State law · Citizen initiative
School sports by biological sex
Explain it like I'm 5
Schools would label teams male, female, or co-ed. Students would generally play on the team matching their biological sex, like sorting teams by one body-based rule.
Yes vote
K-12 and collegiate teams must be separated by biological sex unless they are designated co-ed, with eligibility rules based on that classification.
No vote
Current schools, districts, and athletic associations keep setting eligibility policies under existing law.
The question to ask yourself
Should statewide biological-sex categories override local policies to protect sex-based competition, or should schools retain flexibility?
The case for
- Supporters say biological-sex categories protect fairness, safety, scholarships, and opportunities in girls' sports.
- One statewide rule would replace differing school and athletic-association policies.
- Co-ed teams would remain available.
Backed by: Protect Kids Colorado, Republican Party of Colorado, Focus on the Family, Colorado Catholic Conference
The case against
- The rule could exclude transgender students from teams matching their gender identity.
- Enforcement may require schools to handle sensitive personal information.
- A statewide mandate would reduce local flexibility and could prompt legal challenges.
Opposed by: Families Not Politics, Colorado Education Association, ACLU of Colorado, The Women's Foundation of Colorado
- Money
- Administrative costs are expected to be small, while possible legal costs are not estimated.
- Don't be misled
- It is misleading to say the measure bans transgender students from all sports, because co-ed teams remain allowed, though participation on sex-specific teams would be restricted.