 Slattery was born in Ventura, California and attended Shadow Mountain High School in Phoenix, Arizona, where he played baseball.He went on to attend Harvard University, where he received his bachelor's degree in Dramatic Arts and Film Studies, and the renowned UCLA Film School, earning a Master of Fine Arts degree in the UCLA Producers Program.Slattery is best known as an actor, with credits in film and television including the MGM film "Sleepover", and television series including "The Jersey" on the Disney Channel, "The District" on CBS, "American Dreams" on NBC, "JAG" on CBS, and "MTV's Undressed" on MTV.