Evansvilles Mater Dei High School has a new leader, but hes not a new part of the schools family. Friday morning, school officials announced Timothy A. Dickel is the new principal of the catholic high school. Dickel has served as the interim principal there since last August and as the Director of Music and Drama for the past four years. He says hes ready for the job. Dickel received his Masters degree from Indiana Wesleyan University and taught at Kokomo High School before coming to Evansville.