Susan Winebrenner, M.S., is a former classroom teacher and current full-time consultant in staff development. She presents workshops and seminars nationally and internationally, helping educators translate educational research into classroom practice. Susan is also the author of Differentiating Content for Gifted Learners in Grades 6–12 (CD-ROM) and Teaching Kids with Learning Difficulties in the Regular Classroom, and coauthor of The Cluster Grouping Handbook. She lives in San Marcos, California.
Dina Brulles, Ph.D., is a school administrator and the gifted education director for the Paradise Valley Unified School District in Arizona. Prior to becoming an administrator, Dina was an elementary classroom teacher, a bilingual teacher, an ESL teacher, and a gifted-cluster teacher. Dina is coauthor of The Cluster Grouping Handbook. She lives in Peoria, Arizona.