
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.”
- Direct Phone: 262-752-2501
- Email: ncoffman@prairieschool.com
Division Heads and School Leadership

Margaret McDonough
Head of Upper School
“Magic happens here. Self-discovery, growth, and preparation for college, career, and life happen in countless ways, seen and unseen, realized now and realized later. That is the meaning of a solid foundation, and Prairie provides it with intentionality, care, and consistency.”
- Direct Phone: 262-752-2626
- Email: mmcdonough@prairieschool.com
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!”
- Direct Phone: 262-752-2575
- Email: kboero@prairieschool.com

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.”
- Direct Phone: 262-752-2551
- Email: sholum@prairieschool.com

Aliya Pitts
Chief Advancement Officer
“Prairie is a place where people truly care about the outcome and the process: not only the lessons our students are learning, but how they learn them. Additionally, the Prairie community values every child for who they truly are — and there is nothing more empowering than having the opportunity to truly be yourself.”
- Direct Phone: 262-752-2520
- Email: apitts@prairieschool.com

Steve Joost
Assistant Head of School for Finance & Operations/C.F.O.
“Prairie prepares students to be leaders and excel at what interests them.”
- Direct Phone: 262-752-2511
- Email: sjoost@prairieschool.com

Lisa Koleske
SHRM-CP, Director of Human Resources
- Direct Phone: 262-752-2515
- Email: lkoleske@prairieschool.com