Active learning is critical to the development of lifelong learners. This study employed a mixed-methods approach to determine the extent to which teachers incorporate rigor and engagement in their classrooms. Both of these elements are required to create active learning environments for students. This evaluation study investigated the knowledge,…

A longitudinal evaluation study of a science professional development program for K-12 teachers was conducted using the CIPP evaluation model. Eleven years of program data were described and analyzed. Elementary teachers comprised 62% of the 384 participants, 17% of all participants were middle school teachers, and 13% of all participants were…