The focus of this chapter is on the evidence to date that documents the impact of PDS engagement on four specific groups of participants: veteran P-12 teachers, university faculty, P-12 school principals, and parents and community members. In reviewing the literature concerning the impact of PDS engagement on these four groups, the authors' primary emphasis was on reviewing studies published in peer-reviewed journals, but their review also included doctoral dissertations, book chapters, and papers presented at national and regional conferences when they could be obtained. Expanding the review beyond peer-reviewed journals allowed them to obtain a more comprehensive picture of the scholarship in these important areas.