Elizabeth Cohen has been involved in instructional technology since the first Apple IIs made their way into schools. She initially advocated for technology use as a speech pathologist in a special education classroom. Today, Cohen serves as director of technology at St. Thomas Episcopal Parish School in Coral Gables, Fla., where she’s been guiding notebook PC programs for the past five years. Based on her experience, Cohen wrote “Technology Supports Differentiated Learning ” on page 11.

Skip Stahl is director of technical assistance at the Center for Applied Special Technology in Wakefield, Mass., and project director for the National Instructional Materials Accessibility Standard Development Center. An expert in Universal Design for Learning, Stahl has extensive experience providing leadership in the application of universal design to instructional practice in K-12 and postsecondary settings. He is the author of “No Curriculum Left Behind ” on page 42.

Doug Johnson, who wrote “Meeting CIPA Requirements ” (page 22), has been the director of media and technology for Minnesota's Mankato Area Public Schools since 1991 and an adjunct faculty member of Minnesota State University, Mankato, since 1990. His teaching experience includes work in grades K-12 in schools in the United States and Saudi Arabia. He has published four books, and his articles have appeared in more than 40 books and periodicals.

Tony Wold has been involved in public education for almost two decades and is now the director of student assessment for the Rowland Unified School District in eastern Los Angeles County. Wold, author of “Teachers Need Time to Teach ” (page 15), has been a consultant in curriculum reform, data-driven decision-making and standards-based instruction for dozens of school districts, counties and educational companies in several states. He earned his doctorate in educational leadership from the University of Southern California.