THIS STUDY WAS DESIGNED TO DESCRIBE THE PSYCHOLOGICAL ENVIRONMENT OF AN URBAN PUBLIC SCHOOL SYSTEM USING THE MURRAY NEEDS-PRESS MODEL. A BROAD MEASURE OF ENVIRONMENTAL PRESS WAS ADAPTED FROM AN EXISTING MODEL AND USED TO--(1) DESCRIBE THE ENVIRONMENTAL PRESS PERCEIVED BY TEACHERS, (2) FACTOR ANALYZE THESE DATA, (3) DESCRIBE THE PERSONALITY (NEEDS) CHARACTERISTICS OF TEACHERS, (4) RELATE THE CHARACTERIZATION OF ENVIRONMENTAL PRESS TO STAFF PERSONALITY CHARACTERISTICS, AND (5) CORRELATE SUCH FACTORS WITH ADMINISTRATIVE PERSONALITY CHARACTERISTICS. A SCHOOL SYSTEM'S ORGANIZATIONAL CLIMATE AND ORGANIZATIONAL CULTURE WERE THUS DESCRIBED. TEACHERS AND ADMINISTRATORS OF 44 ELEMENTARY, JUNIOR HIGH, AND SENIOR HIGH SCHOOLS WERE ADMINISTERED THE INSTRUMENTS. THE FINDINGS INDICATED THAT THE INSTRUMENT WAS EFFECTIVE IN PROVIDING DATA WHICH COULD BE USED TO DESCRIBE THE ORGANIZATIONAL CLIMATE OF THE SCHOOL. (JH)