A way to measure and understand your chances of being admitted to a particular college. Colleges are selective to varying degrees. A highly selective school admits less than 30% of applicants. The national average acceptance rate for first-time students across all four-year institutions in the United States was 66.7 percent in Fall 2017, which means that most colleges accept more than half of their applicants. It’s helpful to remember that selectivity doesn’t necessarily reflect quality, value, or a good fit for you.