Web 2.0 and its associated tools have the power to substantially increase student achievement. This book has two straightforward primary purposes: to detail the research-based reasons classroom teachers fail to incorporate Web 2.0 tools into their instruction and collaboration with other educators; and to provide actionable strategies to rectify these omissions. The Secret Reasons Why Teachers Are Not Using Web 2.0 Tools and What School Librarians Can Do about It provides authoritative definitions of Web 2.0, explains the types of Web 2.0 tools suited for use in educational settings, examines the research-based reasons they are underutilized, and offers strategies for school librarians to model the use of technology-enabled tools—and for teaching others to do so. This book will benefit anyone wishing to effect a positive social change in improving student achievement: practicing K-12 librarians and educators, K-12 school and district administrators, and researchers in the field of K-12 education.