Authors & Presenters

Heather Friziellie is currently superintendent of schools for Fox Lake Grade School District 114, located in the suburbs northwest of Chicago. She previously served as both an elementary principal and a middle school principal.

Doug Gee is the superintendent of Clear Lake School District in Iowa. He has been an educator for over thirty years, also serving as principal, teacher, and coach in various size districts.

Troy Gobble is principal of Adlai E. Stevenson High School in Illinois. He previously served as assistant principal for teaching and learning at Stevenson.

Paul Goldberg, EdD, is superintendent at East Prairie School District in Skokie, IL. He has led diverse, low-income schools to high levels of success.

Brian Greeney, EdD, serves as the chief of school in a public school district in Texas. His focus is on helping secondary schools use the PLC process to grow their student and teacher efficacy.

Mike Hagadone, MEd, served as the assistant superintendent of White River School District in Washington State until his retirement in 2020. With 40 years of experience, he is a former teacher, assistant principal, principal, and director of secondary education.

John Hannigan, EdD, is an author and speaker who has served in education for over 20 years as a teacher, instructional coach, principal, and county office leadership coach. His expertise includes RTI at Work™, PLC at Work®, MTSS, PBIS, restorative practices, social-emotional learning, and more.

Jessica Djabrayan Hannigan, EdD, works with US schools and districts to design and implement effective social-emotional and behavioral systems. Her expertise includes RTI, PLCs, MTSS, PBIS, restorative practices, social-emotional learning, and more.

Aaron Hansen is a nationally recognized presenter, author and coach who empowers teachers and leaders to transform their schools.

Chris Hansen has been a teacher, principal, and a director of technology and learning in his more than 30 years of education and international experience. Currently, he works as a Solution Tree associate throughout the United States, where his passion is implementing and refining professional learning communities.