Esri is now accepting applications for its fourth annual “Teachers Teaching Teachers GIS” (T3G) institute, which will be held June 17-22, 2012, at Esri headquarters in Redlands, California. T3G is a professional development opportunity for teachers who want to help other educators learn why and how to use geographic information systems. Institute applicants should be educators who are already using GIS, teaching with computers, and experienced in leading professional development sessions for other educators. The application deadline is November 30, 2011. Visit the T3G Institute website for complete requirements and application instructions.