A study involving 101 sixth-grade children in the San Luis Valley Public Schools in Colorado was made (1) to determine factors causing measurable differences in scholastic achievement between Anglo American and Spanish American children and (2) to suggest methods for correcting these differences. History of the region, cultural differences between the Anglo and Spanish American groups in the region, and tests suitable for use in the study are discussed. Children were tested with the "Gates Reading Survey Test" and with the "Pintner General Ability Test: Non-Language Series." In addition, a questionnaire was administered to each child to analyze cultural differences in the area. Results of the study indicated similar intelligence test scores and noticeable differences in reading test scores between the 2 groups, with the Spanish American children being about 1 year behind the Anglo American children. Very little difference was observed between the 2 groups on the environmental-cultural factors studied. A bibliography of related publications and a copy of the questionnaire used in the study are included. (DK)