A couple of boys get left at Uncle Jim and Aunt Helen's dairy farm by their parents. Excellent example of a rainy-day film for an elementary school.
Follow George and Betty, as they meet up with their cousins (with hick accents and all) Andy and Jane. Big Bill, when he gets introduced, can't keep his hands off the cows' udders. According to him, he's just trying to ensure the milk stays "good and wholesome." Sure Bill...we believe you.
Make sure you stick around for the suspenseful rope scene. These kids (excluding George) have upper body strength like little body builders.
Don't forget what Uncle Jim always says, "cows are much like people."