Mark Grenier i​s an actor, writer, director, and teacher in New York City. He teaches acting, filmmaking, improv, and writing classes at The Barrow Group. He has also taught at the American Comedy Institute, Annoyance Theatre, The Peoples Improv Theater, and Magnet Theater, where he also served as training center director. Mark has conducted classes, workshops, and professional development seminars for 20VIC Management, Breads Bakery, Columbia University, Fairfield University, The Ford Foundation, The Fulbright Association, Kaye Scholer LLP, Marymount Manhattan College, The New York Film Academy, The North Highland Company, Pearson Education, Twitter, WebMD, and others. He is currently completing an MFA in Cinema Arts at the Graduate School of Cinema at Brooklyn College.