The objective of this study is to examine the phenomenon of aggressive behavior among teenagers; the profile of aggressive teenagers in school; pattern and frequency of aggressive behavior among teenagers in school; measuring psychological preferences in aggressive behavior among teenagers. The number of respondents were 14,520 based on gender, Forms, type of school and area. Male and female students ranging from Form 1, 2 and 4 were taken as samples for the study. The location of the study was divided into five zones i.e. the North Zone, East Zone, Central Zone, South Zone, Zone of Sabah and Zone of Sarawak. Three types of schools involved in the study were the secondary school (SMK), boarding school (SBP) and religious secondary school (SMKA).