Fond du Lac School District -

The Fond du Lac School District is pleased to announce administrative changes for the 2025-26 school year.

We are pleased to announce that Nathan Brunnbauer has been promoted to Assistant Principal at Sabish Middle School. He has served as a Teacher on Special Assignment (TOSA) at Parkside Elementary for the last three years.

"Mr. Brunnbauer brings a strong commitment to student growth and a proven leadership ability," said Matt Steinbarth, Chief Academic Officer and incoming Superintendent. “We are confident that he will make an impact at Sabish Middle School, and we are proud to support his continued leadership journey."

Mr. Brunnbauer has a Bachelor of Arts in Education from Lakeland University and a Master of Educational Leadership from Marian University.

After sharing his interest through our administrative hiring pool, Mr. Brunnbauer applied, was interviewed, and chosen for the role. Our district continues to look for promising candidates throughout our district staff who have shown the needed attributes for leadership opportunities.

We are also pleased to announce Steven Rosencrans as an assistant principal at Fond du Lac High School. Mr. Rosencrans has been serving as an interim assistant principal for the 2024-25 school year and previously taught English at the high school for seven years.

“Mr. Rosencrans has shown strong leadership and a clear commitment to student success as interim assistant principal,” said Steinbarth. “His familiarity with the high school and his ability to build positive relationships make him a valuable part of our leadership team.”

We are excited to have our 2025-26 leadership team in place and look forward to continuing our dedication to changing outcomes for our students.