Administrators at Findlay City Schools had been researching methods to improve student achievement. District administrators decided to work to form professional learning communities to focus on improved student learning. Findlay High School had recently added a freshman wing to help students transition to high school and allow teachers to focus on reducing freshmen failures and expulsions and on improving attendance. The high school's secondary curriculum director and principal began planning a new form of professional development. The five-year plan the two created was designed to answer three questions: (1) What does the school want students to learn?; (2) How can it be certain all students have learned it?; and (3) How can it assist those who are not mastering the intended outcomes? The plan has four steps: (1) learning the concepts; (2) responding to what the school has learned; (3) embracing data; and (4) further analysis. (Contains 2 charts.)