The Kilander Health Knowledge Test is analyzed, based on responses of four independent groups, to determine if response tendencies to test items were peculiar to groups studied and if test items retained independence regardless of the population group. The 1969 edition of the Kilander Health Knowledge Test was administered to all ninth- and twelfth-grade students attending a high school representing both a high and low socioeconomic level. The test was deemed to be sensitive to response tendencies of independent population groups. Analysis procedures also established that test item categories were independent regardless of the population. (JB)