The system of higher education in the 　　United States　　 is complex. It comprises four categories of institutions: the university, which may contain: A. several colleges for undergraduate students seeking a bachelor’s (four-year) degree and B. one or more graduate schools for those continuing in specialized studies beyond the bachelor’s degree to obtain a master or a doctoral degree; the four-year undergraduate institution—the college—most of which are not part of a university； the technical training institution， at which high school graduates may take courses ranging from six months to four years in duration and learn a wide variety of technical skills, from hair styling through business accounting to computer programming; and the two-year，or community college， from which students may enter many professions or may transfer to four-year colleges or universities.　　

Any of these institutions， in any category， might be either public or private， depending on the source of its funding. There is no clear or inevitable distinction in terms of quality of education offered between the institutions which are publicly or privately funded；however， this is not to say that all institutions enjoy equal prestige nor that there are no material differences among them.