Authors & Presenters

Heather serves as the superintendent of schools in Fox Lake District 114 in the northern Illinois suburbs. Her work focuses on ensuring learning for ALL in schools.

Garnet Hillman is an educator, author, presenter, and learner. She has served as an instructional coach at Caruso Middle School and as a Spanish teacher at Lockport Township High School, both in Illinois.

Dr. Jamie Lakey is a middle school principal dedicated to transforming her second campus into a Model PLC at Work® school. With deep expertise in instructional and assessment design, Dr. Lakey focuses on creating professional learning that leads to effective implementation and sustainable change.

Paula Maeker is an educator, consultant, and advocate for learner-centered education. She has more than twenty-three years’ experience as an elementary teacher, literacy specialist, instructional coach, Title 1 program coordinator, campus administrator, director of elementary literacy, and director of instructional design.

With more than 35 years of experience as an educator, Peter Marshall most recently served as a school administrator and in a central office position as the principal for leadership and staff development.

Ken Mattingly is a retired classroom teacher with 27 years of experience. He has implemented classroom assessment for student learning for the past 15 years.

Jadi Miller, EdD, is director of assessment for Elkhorn Public Schools in Elkhorn, Nebraska. She has experience as a teacher and an administrator at the elementary, secondary, and district levels.

Dr. Susannah Holbert O'Bara is a deputy superintendent for the Denton Independent School District in Texas. She previously served as principal of Mildred M. Hawk Elementary School for nine years. Susannah has been an elementary administrator for more than 15 years.

Josh Ogilvie is a teacher, speaker, and learner who is passionate about sound assessment and grading practices that empower students in their learning and contribute to the development of the whole child.

Gib Ostheimer is a high school principal in Wyoming and a former elementary school principal. He has worked with schools on topics including assessment architecture, instructional agility, and school improvement and culture.