Liberal arts colleges are American institutions of higher education which have traditionally emphasized interactive instruction (although research is still a component of these institutions) at the undergraduate level. While there is no nationwide legal standard in the United States, the term "university" is primarily used to designate graduate education and research institutions, and is reserved for doctorate-granting institutions, and some US states, such as Massachusetts, will only grant a school "university status" if it offers graduate programs in multiple disciplines.

These colleges also encourage a high level of student-teacher interaction at the center of which are classes taught by full-time faculty rather than graduate student TAs (who teach some of the classes at Research I and other universities). They are known for being residential and for having smaller enrollment, class size and student-teacher ratios than universities.
(参考: Liberal arts colleges in the United States)