Increasing school time – either through longer school hours or summer school – also has found some support (Jacob and Lefgren, 2004). Higher education In many ways, higher education represents the strongest part of the U.S. educational system, as demonstrated by the fact that students from all parts of the world come here to  BIS Review 106/2007  5  study.
Our institutions of higher learning are extraordinarily varied, ranging from large public research universities to small liberal arts colleges to community colleges and vocational schools. The main business of our institutions of higher education is, of course, undergraduate teaching. But unlike some countries, we do not separate research and undergraduate education; our advanced, graduate-level research programs are housed in universities with strong undergraduate programs.