THIS EXTENSIVE TWO-VOLUME REPORT DESCRIBES THE IMPACT OF A CURRICULUM UNIT ON THE AMERICAN NEGRO WHICH WAS PRESENTED TO NEGRO AND WHITE PUPILS IN 19 INTEGRATED FOURTH-GRADE CLASSROOMS IN THE GARY, INDIANA, PUBLIC SCHOOLS. THE EXPERIMENTAL UNIT WAS NOT TAUGHT TO A CONTROL GROUP OF SEVEN FOURTH-GRADE CLASSES. SINCE AN ADDITIONAL OBJECTIVE OF THE STUDY WAS TO DETERMINE THE INFLUENCE OF EXTENDED COMMUNITY CONTACTS UPON RACIAL CLEAVAGES IN THE CLASSROOM, SOME OF THE EXPERIMENTAL CLASSROOMS CONTAINED CHILDREN TRANSPORTED FROM DIFFERENT NEIGHBORHOODS. CHILDREN IN THE CONTROL CLASSROOMS WERE ALL FROM THE SAME NEIGHBORHOOD. A SOCIOMETRIC RATING SCALE, A TEST OF SELF-CONCEPT, AND A TEST OF FACTUAL KNOWLEDGE ON THE NEGRO WERE ADMINISTERED TO ALL PUPILS BEFORE AND AFTER THE EXPERIMENTAL UNIT WAS TAUGHT. FINDINGS INDICATE THAT THE STUDY OF THE NEGRO HAD NO DETRIMENTAL EFFECT UPON PUPIL RELATIONSHIPS IN THE INTERRACIAL CLASSROOMS, AND THAT NEGRO AND WHITE CHILDREN CAN LEARN ABOUT THE NEGRO WITHOUT UNUSUAL DIFFICULTY OR EMOTIONAL INVOLVEMENT. SIGNIFICANT GAINS IN SELF-CONCEPT WERE MADE BY NEGRO AND WHITE EXPERIMENTAL CHILDREN WHO HAD NOT BEEN TRANSPORTED AND HAD ATTENDED NEIGHBORHOOD SCHOOLS. ONE APPENDIX, WHICH CONSTITUTES ALMOST ALL OF THE SECOND VOLUME OF THIS REPORT, CONTAINS CASE HISTORIES OF FORTY CHILDREN SELECTED FOR STUDY ON THE BASIS OF THEIR PERFORMANCE ON THE TESTS OF FACTUAL KNOWLEDGE AND SELF-CONCEPT. OTHER APPENDIXES CONTAIN MEASUREMENT INSTRUMENTS AND AN EXHIBIT OF THE EXPERIMENTAL CURRICULUM UNIT. THIS REPORT IS IN TWO VOLUMES. (LB)