Complex sentence: Hopkins has taught at Swarthmore since 1967, has been a full professor since 1978, and was made the Richter Professor of Political Science in 1995.
Split into simpler sentences: Hopkins has taught at Swarthmore College since 1967, where he is the Richter Professor of Political Science. He was made a full professor in 1978 and was made the Richter Professor of Political Science in 1995.