The purpose of this explanatory mixed method study was to assess teachers' perceptions of whole brain learning (WBL) and its effects on student success within eight southern Illinois school districts in rural and suburban areas in kindergarten through fourth grade. Quantitative data were collected from survey questions in SurveyMonkey, providing data analysis through frequency charts. After analyzing the quantitative data, open-ended interview questions were created. Qualitative data were collected and analyzed from open-ended interviews and observations. The study analyzed the quantitative and qualitative findings and determined teachers' perceptions of WBL. [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://bibliotheek.ehb.be:2222/en-US/products/dissertations/individuals.shtml.]