Environmental Education (EE) plays a vital role in the development of an environmentally-literate global society. Evaluation of EE workshops impacts on teachers environmental knowledge is critical. This study described the development and implementation of an efficient, reliable, and valid survey instrument that measured teachers environmental knowledge during an Ethnobotanical EE Workshop. Teachers environmental knowledge increased in primary areas of the workshop. Teacher interviews indicated that environmental knowledge increases were recognized by more confidence introducing and teaching new environmental topics in their classrooms.Based on these results, it appeared that most teachers derived general benefits from the Ethnobotanical EE workshop. EE workshops that promote positive interactions with EE strengthen teachers environmental knowledge and may facilitate more EE instruction in the classroom. Further research is needed to identify additional factors that affect teachers environmental knowledge and to determine methods for improving the delivery and functional utility of EE workshops for teachers.
