The 20 best colleges in America that accept the fewest students

With over 20 million students expected to attend college in 2016, it's no wonder admittance to some of the nation's top schools is getting even more difficult.

Business Insider recently published its list of the 50 best colleges in America. Our methodology didn't give significant weight to selectivity - we instead focused more on graduation rates, early-career earnings, and quality student life experience - but a number of highly selective schools made it on the list.

To determine the toughest schools to get into, Business Insider sorted the colleges on our top 50 list by their acceptance rates - gathered from the US government's College Scorecard - using their overall rank as a tie-breaker.

Read on to find out the 20 top colleges that are the hardest to get into.