Judy Rex an employee of the Scottsdale School District in Arizona, where she has taught in multi-age elementary classrooms for the past 16 years. Judy Rex has also been a professional development facilitator for the Scottsdale School District specializing in differentiated curriculum, instructional strategies for diverse student populations, and positive classroom management.

Prior to teaching in Scottsdale, Judy Rex taught at the middle school level in southern California. In 1995, she received the Scottsdale Mayor's Outstanding Teacher of Disabled Children Award for the successful inclusion of such children in her heterogeneous classroom and an award for District Teachers of the Year in 1999.

Judy Rex has consulted nationally on Differentiated Instruction for over six years. Her classroom is the featured site for the video, A Visit to a Differentiated Classroom.