A retired U.S. Army Sergeant First Class with deployments around the globe, John K. Jonak’s military service shaped his perspective on leadership and service. With over 27 years of experience in education, John has dedicated his career to serving students, educators, and communities. His journey began as a part-time paraprofessional at an elementary school in Mattoon, Illinois, while attending Lakeland Community College, demonstrating his commitment to education from the ground up.
After graduating from Eastern Illinois University, John taught Social Studies and Literature for seven years at Heritage Middle School in Berwyn, where he became known as “Mr. Heritage” for his dedication to school climate and student success. He served as a coach, athletic director, and school improvement team member, always focused on creating positive learning environments.
John’s leadership journey continued as Assistant Principal at Mannheim Middle School and later as Principal of Westmont Junior High School for nine years, where he transformed the school’s performance and culture. As Superintendent of Rosemont School District #78, he serves as the sole district administrator, demonstrating his ability to lead at every level.
He and his wife Tonia, an elementary Special Education teacher in Batavia, are proud parents raising their children Jackson and Addie in Batavia. The Jonak family experienced profound loss with the tragic death of their oldest daughter Katie in 2016, which deepened John’s commitment to serving families and ensuring every child’s safety and success.
