Many of the Challenge Day facilitators who were at Cadillac High School last year will be featured on a show premiering Tuesday night on MTV. A press release states the new docu-series “If You Really Knew Me” goes inside high schools across the country to discover what can happen when students peel back their public personas, break out of their cliques and show their peers who they really are. Each episode takes place at a different high school with its own set of issues and student cliques, following five students as they experience Challenge Day. The group was brought to Cadillac after the suicide of a high school student brought divides to light, and students participating reported life-changing experiences. “If You Really Knew Me” premieres Tuesday night at 11 on MTV.