Yale President Richard C. Levin announced last month that the university will expand undergraduate enrollment by about 15%.

The enrollment increase is part of a plan to built two new residential colleges on the Yale campus. In a letter to Yale alumni, faculty, students and staff, Levin said he expected the new colleges to open in 2013. He pointed out that at the moment Yale admits less than 10 percent of its 20,000 or so applicants each year.

News of the expansion came out in February.