4. Marquette University
STD rate: 1,236
Marquette University secured its spot on our list of colleges with the highest STD rates in America with a sexual health rate of 1.76%. 1,236 people per 100,000 at this university have an STD which is +203% more than the national average. As a result of a sexual assault, 10.7 per 10,000 people have an STD. This is +71% more than the national average.