Q&A with Roger Yager Robert Yager’s work with science educators has long emphasized the importance of examining the student outcomes that result from teacher professional learning. In 1999, Learning Forward (then NSDC) highlighted the Iowa Chautauqua Program in What Works in the Middle: Results-Based Staff Development (Killion, 1999) as one of the few staff development programs for science that could demonstrate results. The program included a range of learning designs, including summer institutes, coaching, demonstrations, action research, and curriculum development. Support for participants extended beyond the summer institute with follow-up in the fall and spring. Data from the program indicate that students of teachers in the Iowa Chautauqua Program outscored their nonparticipating counterparts in four of five domains, and scored at a similar level in the