Linda Diamond, CORE’s President, shares her thoughts on the importance of high fidelity implementation of instructional materials. Linda was one of the original founders of CORE and developed their basic training and leadership materials. She continues to develop CORE’s professional programs, school change models, and professional products. Linda was formerly the Director of Curriculum, Staff Development and Evaluation for the Alameda City Unified School District as well as an elementary and middle school principal. She worked as a policy analyst with RPP International, an education research and public policy forum. Linda served on the California State Superintendent’s Task Force on Reading and was co-author of Building a Powerful Reading Program, which helped establish the foundation for reading policy and legislation in California. She is the co-author of CORE Assessing Reading: Multiple Measures and the nationally acclaimed CORE Teaching Reading Sourcebook.