Character mistake: At prom, when the choir girls sing "don't stop," the girl on the far right can't help staring at the camera twice.
Continuity mistake: When Sammy is learning his lifesaver lessons, he leans on the edge of the counter. From the opposite angle, his hand has moved several inches to the centre.
John Ford: They tell me you want to become a picture maker. What do you know about art, kid?