Grandville Principal Dresses as Darth Vader for Star Wars Day Get our free mobile app Fox 17 reports that Principal David Martini of Cummings Elementary School in Grandville dressed up as Darth Vader in celebration of his favorite day of the year. He greeted students in full costume as they got to school on May 4. Cummings Elementary, Facebook Cummings Elementary, Facebook Looks like the students and teachers got in on the fun too, sporting Star Wars T-shirts, and some even going all out with storm trooper, Obi-Wan, Chewbacca, and Rey costumes. “He does this every year. He is an amazing principal. You should see him on Halloween. The year the Greatest Showman came out he was the lead role! It was amazing!”