The University of Colorado Boulder (CU Boulder) is the flagship university of the four-campus CU system. Founded in 1876, CU Boulder is a comprehensive research university with more than 37,000 undergraduate and graduate students; and 27 percent of its students are racially and ethnically diverse. CU Boulder is one of only 38 AAU public research universities, and its world-renowned faculty maintain a reputation for excellence in research, creative work and teaching across 150 academic fields. Five CU Boulder faculty have received the Nobel Prize since 1989.