Book excerpt: Educators know that teachers are a school's most essential strength. In Building Teachers' Capacity for Success, authors Pete Hall (winner of the 2004 ASCD Outstanding Young Educator Award) and Alisa Simeral offer a straightforward plan to help site-based administrators and instructional coaches collaborate to bring out the best in every teacher, build a stronger and more cohesive staff, and achieve greater academic success. Their model of Strength-Based School Improvement is an alternative to a negative, "deficit approach" focused on fixing what's wrong. Instead, they show administrators, coaches, and teachers how to achieve their goals by working together to maximize what's right.