AN INTENSIVE STUDY OF THE AMERICAN HIGH SCHOOL WAS MADE TO SURVEY AVAILABLE TALENT, IDENTIFY INTERESTS, APTITUDES, AND BACKGROUND FACTORS, DETERMINE EFFECTS OF LACK OF INTEREST AND MOTIVATION, IDENTIFY FACTORS AFFECTING VOCATIONAL CHOICE, IDENTIFY PREDICTORS OF CREATIVITY AND PRODUCTIVITY, DETERMINE THE EFFECTIVENESS OF VARIOUS TYPES OF EDUCATIONAL EXPERIENCE, AND STUDY PROCEDURES FOR REALIZING INDIVIDUAL POTENTIAL. IN THE SPRING OF 1960, A 2-DAY TEST BATTERY WAS GIVEN TO ABOUT 440,000 STUDENTS IN THE 9TH, 10TH, 11TH, AND 12TH GRADES IN 1,353 PUBLIC, PRIVATE, AND PAROCHIAL SCHOOLS IN ALL PARTS OF THE COUNTRY. THEY CONSTITUTED APPROXIMATELY 5 PERCENT OF THE POPULATION OF THE HIGH SCHOOLS IN THE UNITED STATES. INCLUDED IS DETAILED INFORMATION ABOUT THE ACHIEVEMENT, APTITUDE, INTERESTS, AND PERSONALITY CHARACTERISTICS OF THESE STUDENTS. MOST OF THE DATA PERTAINS TO STUDENTS WHO WERE IN GRADE 12 IN THE SPRING OF 1960. DETAILED TABLES ARE INCLUDED.