This compact resource highlights the essential role of professional development in bringing about systemic change that benefits student achievement. The book offers practical methods for designing, promoting, and assessing change and stresses the important role that learning transfer plays in academic improvement and lifelong learning. The new features in this substantially updated revision include: a focus on the site-based professional developer's role as a champion for change in a student-centered learning community; a framework that guides professional developers through three stages of implementation; attention on assessing low-performing students' learning needs as the starting point for creating sustainable change that improves academic achievement schoolwide; emphasis on mediated learning experiences and skillful coaching for adult learners as they gather information and implement new approaches