The University of Oregon (UO, U of O or Oregon) is a public research university in Eugene, Oregon, United States. Founded in 1876, the university is organized into nine colleges and schools and offers 420 undergraduate and graduate degree programs. The university also operates the Ballmer Institute for Children's Behavioral Health in Portland, Oregon; the Oregon Institute of Marine Biology in Charleston, Oregon; and Pine Mountain Observatory in Central Oregon. UO's 295-acre campus is situated along the Willamette River. Most academic programs follow the 10-week quarter system. The university is classified among "R1: Doctoral Universities – Very high research activity" and is a member of the Association of American Universities.