Reaching students with high quality educational interventions rely on well prepared teachers.  Many of our projects concern the evaluation of teacher professional development, particularly in new and emerging fields such as innovation and entrepreneurship or computer science education.   Evaluation of teacher PD programs involves both the immediate feedback about participant experiences and relevance of the PD but also longer term impact on the teaching and learning that happens in the classroom in the context of the broader environmental and systemic issues associated with the schools and districts.