Authors & Presenters

Valerie Hairston is principal of Specialist Rafael Hernando III Middle School in El Paso, Texas. With 18 years of experience, she led her school to implement the professional learning community process, establish a collaborative culture, and improve student achievement.

Kourtney Hake is an English teacher at Sparta Lincoln School in Sparta, Illinois. She is also a member of the National Council for Teachers of English (NCTE), the Illinois Reading Council (IRC), and the Illinois Association of Teachers of English (IATE) since 2014.

Katie Kreimer Hall, EdD, is the supervisor of curriculum and professional development for Fort Smith Public Schools. Previously an administrator in high-poverty schools, she is passionate about building self-efficacy in teachers through the professional learning community process to increase student achievement.

Bill Hall is the former director of educational leadership and professional development for Brevard Public Schools in Florida. He has served as a classroom teacher, assistant principal, and principal.

Rachel Hankerson is currently the principal of Yulupa Elementary School. Rachel has emphasized the importance of working as a team to ensure continuous improvement through professional learning communities, and as a leader, she is able to break down large concepts into manageable chunks, ensuring that her staff feels confident.

Angela Hanlin is a passionate leader committed to driving change in schools and classrooms. Under her guidance, Matthews Elementary achieved remarkable success, reaching a 100 percent proficiency level.

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.

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.

Aaron Hansen is an expert in Professional Learning Communities (PLC), Response to Intervention (RTI) and student empowerment. He is a highly sought-after international speaker, strategic consultant, coach, and author.

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.