The Archdiocese of Indianapolis has been using the Sander's value-added model to determine if they have had gains in student achievement in language arts, mathematics and reading. The article summarizes the method to make this determination and the results from three years of testing using the CTB McGraw-Hill Terre Nova test. The archdiocese has shown valued added gains in language arts and mathematics. [Through a school improvement grant from Lilly Endowment Inc., the Archdiocese of Indianapolis has been able to partner with the Milken Family Foundation to implement the Teacher Advancement Program (TAP) in eight schools.]