Reviewed by GREG KING Director: Ari Sandel Stars: Mae Whitman, Robbie Amell, Bella Thorne, Allison Janney, Ken Jeong, Skyler Samuels, Bianca Santos, Nick Eversman, Romany Malco, Chris Wylde. The dynamics of high school years are fertile material for filmmakers who can explore this psychological minefield of cliques, bullying, pecking orders, identity, and entrenched attitudes. It is a setting that has given us …