This is a descriptive study conducted with the aim of revealing the relationship between high school students' burnout levels and perceived social support levels with respect to their characteristics. The study group included a total of 657 students who were attending high schools. The Maslach Burnout Inventory Student Survey (MBI-SS) was adapted to Turkish students and Multiple regression, t-test and one-way multivariate variance analysis (MANOVA) were used to analyze the data. Results showed that students' burnout levels were predicted by their perceived social support levels, and influenced by sex to a moderate degree. Also, burnout levels increased together with the grade; burnout levels of students from different areas of study did not differ meaningfully; students who perceived themselves as moderately successful experienced higher burnout than those who perceived themselves as highly successful.