Complex sentence: The "Student Activity Council" (SAC) plans and executes events and activities for the student body such as Grade 9 Orientation Day, Welcome Back Carnival, Holiday Concert, Semi-Formal and Prom.
Split into simpler sentences: The "Student Activity Council" (SAC) plans and executes events and activities for the student body. Some annually planned SAC events include Grade 9 Orientation Day, Welcome Back Carnival, Holiday Concert, Semi-Formal and Prom.