Abstract: The article is devoted to the analysis of the impact of school students' participation in volunteer teems (druzhinas) on the development of their personal traits (aggression and adaptability) that may serve as internal subjective factors to prevent or commit violations of law by school students. The article presents the results of the survey that involved school students aged 14 - 16 who study at School No. 11 named after A. Kulakov in Krasnoyarsk. Based on the results of the research, school students were divided into two groups: current members of druzhinas or those who are going to join a druzhina and students who are not interested in joining druzhinas. The authors describe results of tests for both groups and demonstrate that school students oriented at joining druzhinas are less aggressive and more adaptable. Thus, the authors conclude that druzhinas may be viewed as the mean of crime prevention in high school. The tests used by the authors of the article during their survey include Attitude to Volunteering Test (offered by the authors themselves), Roger's and Diamond's Social and Psychological Adaptation Inventory and Buss - Durkee Hostility Inventory. The results of the research prove the hypothesis that school students who participate in druzhinas have a higher level of adaptability and lower level of aggression. School students who are not members of druzhinas and not interested in joining volunteer teams are inclined towards physical aggression and disadaptation. The authors conclude that a positive attitude of school students towards participation in young volunteer teams make them develop 'positive' behavioral patterns approved by the society, school and law. This means that young volunteer groups can be viewed as the mean of crime or administrative offense prevention that will also contribute to the development of patriotism and patriotic education of school students.