The Native American population scores farther from the norm on standardized tests than other minority populations. Native Americans are generally believed to be culturally more different from the rest of the United States population than other minorities are in that the Native American traditional cultures are more intact. This is particularly true of the Navajo and Hopi cultures observed in this study. One area thought to contribute to different reactions to the testing process and to lower Native American performance on standardized tests is the perception of reality or world view. While there has been a great deal of research, work, and controversy over cultural content bias on standardized tests, there has been relatively little done on cultural process bias of those same tests. It is essential, for the accurate evaluation of students, that tests and test results be used appropriately. Only in this manner can educators make a fair and accurate assessment of their students in order to facilitate their learning. It is becoming more apparent that the use of standardized tests for assessment of minority populations is questionable, both from a content and a process viewpoint. Therefore, it is essential that such tests, if they are used at all, are used in a sensitive and appropriate manner which takes into consideration that they may be inaccurate and may give absolutely misleading information concerning the students to whom they are administered. (Four tables of data are included.) (RAE)