The present research intended to investigate the value system in terms of openness to change in sociometry groups. The research method applied was causal-comparative, and the statistical population included all female high school students of Baharestan. From among 21 high schools, 8 were selected using multistage random samplingmethod. Later, the sociometry questionnaire wasadministered to 1232students of these schools to identify the popular and secluded ones. From this population, 368 students were placed in the popular and secluded groups. To measure the value system, Schwartz Periodical Values Questionnaire was drawn on. Openness to change consisted of the three components of self-direction, stimulation and hedonism. For statistical analysis, two-way MANOVA was used. The research results revealed that the values of self-direction, stimulation, and hedonism were found more in the popular group than in the secluded group. In addition, openness to change was also found to be greater among the popular adolescents than the secluded ones.