Our Leadership Team

Nathaniel W. Coffman, Ed.D.
Head of School & President

“Our students thrive in college and as adults because they are highly skilled, self-motivated learners who know how to succeed both individually and as a part of diverse teams. They know how to take action, build relationships, collaborate and communicate.”

Read more about Dr. Coffman.

Division Heads and School Leadership

Mari Grobschmidt
Head of Upper School

“I am both honored and thrilled to partner with our faculty, staff, students, and families as we collectively foster a caring community while continuing to enrich our pursuit of excellence for each student.” 

Kathy Boero
Head of Middle School & Associate Head of School

“I want to create an environment that provides a strong foundation for skill and social development and supports children to soar and achieve great things!”

Susan Holum
Head of Primary School

“I am inspired by the teachers I work with every day. Their passion, creativity, and knowledge make me want to be better, and watching the students learn and grow is what makes our efforts worth while. The diversity of the student body, and what each individual brings to Prairie, is exciting.”

Steve Joost
Assistant Head of School for Finance & Operations/C.F.O.

“Prairie prepares students to be leaders and excel at what interests them.”

Lisa Koleske
SHRM-CP, Chief Human Resource Officer

“I value our hard-working faculty who bring their passion, expertise, inspiration and collaboration each day to the classroom for the students and the Prairie community.”