Pérsida Himmele is an associate professor at Millersville University in Pennsylvania. She has served as an elementary and middle school teacher, a district administrator, an English language learner program consultant, and a public speaker on issues related to student engagement and teaching in diverse classrooms.

She has lived, taught, and studied in New York, California, and Pennsylvania, becoming actively involved in advocating for the passage of educational policies and funding formulas for the betterment of urban schools and English language learners.

William Himmele is an associate professor at Millersville University in Pennsylvania. He has served as an ESL teacher and a speech pathologist, a higher education administrator, an international consultant, and a speaker on issues related to increasing student engagement and teaching English language learners.

Himmele also served as the coordinator for the graduate ESL teacher certification program at Millersville University and has been an educational program consultant for several schools in various countries seeking to improve their school programs.

His is coauthor with Pérsida Himmele of Total Participation Techniques: Making Every Student an Active Learner and Total Literacy Techniques: Tools to Help Students Analyze Literature and Informational Texts.