Complex sentence: Harris-Perry joined the political science faculty of the University of Chicago in 1999 and taught there for seven years, until 2006, when she accepted a tenured appointment at Princeton University as an Associate Professor of Political Science and African-American Studies.
Split into simpler sentences: Harris-Perry joined the political science faculty of the University of Chicago in 1999. She taught there until 2006, when she accepted a tenured appointment at Princeton University as an Associate Professor of Political Science and African-American Studies.