Complex sentence: Kelley had taught sociology and criminal justice studies at Longwood since 1994 and had started Longwood's chapter of Lambda Alpha Epsilon, a criminal justice fraternity--often having students over for cookouts.
Split into simpler sentences: Kelley had taught sociology and criminal justice studies at Longwood since 1994. She started Longwood's chapter of Lambda Alpha Epsilon, a criminal justice fraternity, and often had students over for cookouts.