Royall High School will host its junior prom from 7:30 to 11:30 p.m., with the grand march at 8:30 p.m., on Saturday, April 27, in the high school gymnasium. Post-prom activities will be at the high school from 12–5 a.m. Parents who would like to help chaperone or supply snacks should contact Kristine Moten, the…