DOUGLAS COUNTY, Colo. A former Rock Canyon High School teacher has been arrested on two counts, including sexual exploitation of a child, deputies with the Douglas County Sheriffs Office said Wednesday.Christen Cassic, 55, of Parker, was arrested Tuesday by Douglas County detectives on charges of sexual exploitation of a child and indecent exposure.The former teacher is currently being held in the Douglas County Detention Facility on a $150,000 bond, according to a news release.Anyone who may have information that could help detectives in this case is asked to contact Detective Kate Morrissey at [email protected] did not say they were searching for more victims, but the investigation is ongoing.