The purpose of this study was to measure science and mathematics teacher candidates' environmental knowledge level, awareness, behavior and environmental attitudes. Four instruments comprising Environmental Sensitivity Scale, environmental Behavior Scale, Environmental Attitudes Scale and Environmental Knowledge Test were administered to a total of 138 elementary student teachers to collect data. Their responses were analyzed using percentage, factor analysis and correlation analysis. The findings of the study showed that: (1) students' environmental awareness was high; (2) they were sensitive to environment and tended to protect it; (3) participants were familiar with general topics related to environment whereas they have low information level as to technical, conceptual and important environmental issues. However, students' environmental awareness and positive attitudes have been detected not to reflect their behavior. Concerning the study results, suggestions have been made to help teacher candidates' deal with environmental problems.