In Colorado and elsewhere, sexual assault peaks on campuses at the beginning of the school year – here’s what students should know

Campus climate data shows the ‘red zone,’ the period between orientation and Halloween, is when college sexual assault risk peaks, with first-year women most vulnerable. A 2019 nine-college survey found more than half of first-year assaults occurred in that window, and University of Colorado Boulder data from 2021 and 2024 shows the same pattern. In Colorado alone, 2026 brought a bar drugging case tied to underage assaults and a federal lawsuit over an Air Force Academy graduate's suicide alleging the school failed to protect her.

Under the Clery Act, colleges must report formally filed assaults, but with only about 16% of victims reporting through official channels, the count almost certainly understates the problem. A 2022 federal law required the Department of Education to build a standardized campus climate survey every two years; the department has not yet published that survey or portal.

Surveys consistently find roughly 1 in 5 college women are assaulted during their time at university, with higher risk for gender and sexual minorities, fraternity and sorority members, and those who've been drinking. Most assaults are committed by someone known to the victim, and interventions like bystander training and web-based programs have shown some success in reducing risk.

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