In "The Teacher as Assessment Leader, Second Edition," editor Thomas R. Guskey and expert contributors offer research-backed strategies for re-envisioning assessment to enhance student learning and teacher instruction. The authors provide actionable steps, practical examples, and strategies for utilizing formative assessments. These strategies promote a growth mindset, proficiency, self-regulation, and student ownership, ultimately fostering improved instructional effectiveness and student achievement. K-12 teachers can use this book to: (1) Adopt new perspectives on assessment's role in guiding student learning; (2) Employ practical strategies to improve instruction and enhance student achievement; (3) Promote regular assessment analysis to enhance instructional strategies; (4) Encourage student self-efficacy in identifying and pursuing learning goals; and (5) Lead and collaborate with colleagues in developing more effective, practical assessments and alternative instructional strategies.