Harrison was a four-year letterwinner for the Bruins (2008-11) and played in 169 games, posting a .268 batting average, 14 home runs and 69 runs batted in. She also had 26 doubles, 90 runs scored, 44 walks and 25 sacrifice hits.
After being named to the All-Pac-10 Freshmen team in '08, Harrison was a second-team All-Pac-10 selection in 2009 after hitting .299 and placing second on the team with eight sacrifice hits and fourth with 10 home runs. She became the first UCLA player to hit three home runs in one game on April 26 at Arizona State.
In the Bruins' championship season of 2010, Harrison hit .273 with three homers and 24 RBI, also leading the Bruins with 17 sacrifice hits, tying for second with 15 doubles and placing third with 41 runs scored. Her .977 fielding percentage with only five errors was the best percentage among Pac-10 shortstops. Harrison did not play during the 2011 season due to injury.
A two-time All-Pac-10 Academic honoree (second team in 2010, honorable mention in 2009), Harrison is working towards her degree in anthropology.