Robin Avelar La Salle earned her Ph. D. in education from Stanford University and is the Co-founder and CEO of Principal's Exchange; a technical assistance organization with a 20 years history partnering with schools and districts that serve struggling students. Her career as an equity warrior is captured in her book Data Strategies to Uncover and Eliminate Hidden Inequities: The Wallpaper Effect: (co-authored with Dr. Ruth Johnson). Ruth Johnson is a nationally known expert in the use of data to promote equity. She is the author of several books including ''Data Strategies to Uncover and Eliminate Hidden Inequities: The Wallpaper Effect'' (with co-author Dr. Avelar La Salle) and ''Using Data to Close the Achievement Gap'' a bestselling book published by Corwin Press. . Language: English