During his junior year at Padua Franciscan High School, Thompson delivered one line for the school's production of "Oklahoma!" and walked off to laughter and applause. "Then someone backstage said, 'They're clapping for you. They love you.' After that, I was hooked." Thompson and some of his classmates got a video camera and began making feature-length and short films, and television-style shows. He graduated from Padua in 1993.