The Behavioral and Emotional Screening System (BESS) Student Form is one of the behavioral and emotional risk screening tests that is in more widespread use in U.S. schools systems from preschool through high school. From 2007 to the present, the BESS Student Form has been used for screening in the Los Angeles United School District (LA), which was part of a research grant from the Institute of Education Sciences (Grant # R324B060005). All middle and high schools of the Bibb County Public Schools, an urban schools system surrounding Macon, Georgia, have also participated in BESS screening from 2009 to the present. This study sought to reveal the heterogeneity or uniqueness of the adolescents screened with the BESS Student Form, and then classified them into number of classes holding similar latent features and demographic backgrounds. The primary analytic method of latent class analysis using Mplus 6.11 (Muthen and Muthen 1998) was employed in order to classify the heterogeneity of the BESS participants. Follow-up multivariate analysis was conducted with latent class probabilities as dependent variables for three types of demographic information (gender, grade level, and risk-level classification) as independent variables for finding out the significant effect of demographic information within each class. In the latent class analysis with 4-class solution, class 2 produced statistically significant findings with regard to students' demographic information. There was a significant interaction between student grade and risk level, indicating that younger students were more salient in exhibiting an elevated level of risk than older students. This finding, however, was only present for the LA sample. The gender proportions were also different between LA and Bibb in that girls predominated the high risk class 2 in Bibb, even though the item response patterns within classes were similar. Future research plans include collecting more comprehensive student demographic information and exploring the undiscovered uniqueness within each class. One table is appended.