Complex sentence: Johnson has taught at Rutgers University, Columbia University, Bard College, "The Callaloo Journal" Writers Retreat, and is now a permanent faculty member at the University of Houston Creative Writing Program.
Split into simpler sentences: Johnson has taught at Rutgers University, Columbia University, Bard College, and "The Callaloo Journal" Writers Retreat. He is now a permanent faculty member at the University of Houston Creative Writing Program.