“Chalk It Up” (** out of four) was a lively but dumb comedy about a college student (Maddy Curley) who is dumped by her boyfriend and then attempts to get back at him by starting her own college gymnastics team but soon finds she surprises herself with her own capabilities and success. Gets maximum mileage from Curley and other’s enthusiastic performances but is still really thin stuff. Plays like an unsold sitcom pilot. Young girls and college students may like it more.