Home GREASE the Musical at Saint John High School, March 30, 31, April 1. GREASE the Musical at Saint John High School, March 30, 31, April 1. Loading view. There were no results found. Views Navigation Event Views Navigation Summary List Month Day Today Upcoming Upcoming Select date. Previous Events Today Next Events Subscribe to calendar Google Calendar iCalendar Outlook 365 Outlook Live Export .ics file Export Outlook .ics file Share