Total undergraduate and graduate student enrollment in the US this past September was 19 million. Registration peaked in 2011 at 20.6 million. Matriculation at public four-year schools was 8.1 million, 5.7 million at public two-year schools, and 3.8 million at four-year private nonprofit schools. Attendance at four-year for-profit colleges stood at 970,000 down almost 700,000 from the 2010 peak. Undergraduates number 16.3 million; graduate students number 2.7 million.