A non-verbal science test was constructed to overcome a partial language barrier. Validation was achieved through tape-recorded interviews with the examinees on each test item to determine the clarity of the item and why choices among four possible answers were made. Ninth grade students at three boarding schools conducted by the Bureau of Indian Affairs were the subjects. Students were representative of 107 native villages and six ethnic groups. The study produced a 73-item, multiple-choice science test with a reliability coefficient of .894. Twenty-three of the items were pictorial. The study was unique in that it developed the only science achievement test known to be especially designed for use with Alaska natives. (BC)