This paper describes the development and validation of 3 nutrition achievement tests for kindergarten through sixth grade. Test I was for kindergarten, first grade, and second grade; test II, for third and fourth grade; and test III, for fifth and sixth grade. Test developers constructed 2 prototypes of each test from items paired for content and verified for accuracy. A nationwide sample of 3,393 pupils who had previously received a minimum of 8 hours of nutrition education responded to the prototypes. Based on item-analysis data, the better items from each pair were selected for the final form of the nutrition achievement tests, which appear to be valid and reliable. The tests may be used to evaluate individual children's achievement or to evaluate the effectiveness of nutrition education programs.