THIS 2D-YEAR REPORT OF AN EVALUATION STUDY OF A JUVENILE DELINQUENCY PREVENTION PROGRAM IS CONCERNED PRIMARILY WITH THE ADOLESCENT COHORT (A CORE GROUP OF 14- TO 20-YEAR-OLDS) IN A SINGLE SCHOOL DISTRICT. THE MAJOR AIMS OF THE RESEARCH WERE TO DETERMINE WHETHER INTERVENTIONS HAD REDUCED DELINQUENCY IN A SELECTED GROUP FROM THE DISTRICT, AND TO TEST SOME OF THE CURRENT THEORETICAL ASSUMPTIONS ABOUT DELINQUENCY. THE SAMPLE, INSTRUMENTS, AND DATA COLLECTION METHODS ARE OUTLINED. A SECTION ON DATA ANALYSIS DESCRIBES THE CHARACTERISTICS OF HIGH-, MEDIUM-, AND LOW-RISK GROUPS AND SOME OF THE INTERVENTION EFFORTS TO DEAL WITH THEM. THE RISK GROUPS ARE DISCUSSED IN RELATION TO THE FACTORS OF A PUTATIVE DELINQUENT SUBCULTURE, ASPIRATIONS, PERCEPTIONS OF THE OPPORTUNITY SYSTEM, AND VALUE ORIENTATION. THE SUMMARY AND DISCUSSION SECTION NOTES THAT THE HYPOTHESIS THAT WITHOUT SOME INTERVENTION THE HIGH-RISK GROUP WOULD HAVE BECOME DELINQUENT WAS BORNE OUT, AND THAT THE NEIGHBORHOOD CENTERS IN THE TARGET AREA APPEARED TO HAVE BEEN EFFECTIVE IN REDUCING JUVENILE DELINQUENCY. IT IS FELT THAT THE EXPERIENCE OF THIS PROGRAM SHOWS THAT IF INTERVENTIONS ARE TO BE MORE EFFECTIVE, THEY MUST CONCENTRATE ON THE SPECIFIC PATHOLOGY OF THE GHETTO. THE APPENDIXES CONTAINED EXCERPTS FROM AN INTERVIEW WITH A YOUNG MAN FROM THE AREA AND TWO CASE EVALUATIONS FROM EACH OF THE THREE RISK GROUPS. (NH)