Given the negative impact of students' challenging behaviors on the learning process, a need exists to gain a more comprehensive understanding of how teachers' beliefs, practices, and knowledge relate to their abilities to effectively manage classroom behaviors. Three-hundred and forty-two (342) public school (PK-12) teachers in a mid-Atlantic state responded to an on-line survey. Data were examined using correlational statistical analysis to measure the relationship between teachers' sense of efficacy (TSE) and use of evidenced-based practices (EBP) in managing students with challenging behaviors, teachers' use of EBP and how they value types/topics of professional development and years of teaching experience. Significant correlations were found between TSE and use of EBP. Moderate correlations were indicated between use of EBP and type or topic of professional development. Years of experience did not correlate significantly with use of EBP in managing students with challenging behaviors. A significant difference was found between special and general educators' use of EBP, with special educators reporting a higher use of EBP. Results inform educators as to what teachers need in order to increase the use of EBP in an effort to effectively manage students with challenging behaviors. Research indicates TSE is enhanced and student outcomes improve. [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web page: http://www.proquest.com/en-US/products/dissertations/individuals.shtml.]