New Principal Named for Islander Middle School

Katie Gallagher to lead Mercer Island school starting next year

Apr. 4, 2026 at 9:05am

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A high-contrast, silkscreen-style illustration featuring a repeating pattern of a single, iconic school object like a backpack or pencil, rendered in a palette of bright, neon colors that capture the celebratory mood of a new school leadership transition.The vibrant and creative energy of a new principal taking the helm at Islander Middle School is celebrated through a bold, pop art-inspired illustration.Mercer Island Today

Mercer Island's Islander Middle School has selected Katie Gallagher as its new principal starting next school year, following years of leadership by Mary Jo Budzius and Aaron Miller. Gallagher, already an associate principal and former West Mercer teacher, says she's committed to ensuring every student feels known, supported, and challenged while continuing IMS's strong track record.

Why it matters

The selection of a new principal is a significant event for any school community, as the principal plays a crucial role in shaping the school's culture, curriculum, and overall direction. Gallagher's appointment comes at an important time for Islander Middle School as it aims to build on its strong reputation and continue providing a high-quality education for its students.

The details

Katie Gallagher, who is currently an associate principal at Islander Middle School, will take over as the new principal starting in the 2026-2027 school year. She has previously worked as a teacher at West Mercer Elementary School. In her new role, Gallagher says she is committed to ensuring that every student at IMS feels known, supported, and challenged, while also continuing the school's strong track record of academic excellence.

  • Katie Gallagher will become the new principal of Islander Middle School starting in the 2026-2027 school year.
  • Mary Jo Budzius and Aaron Miller have led Islander Middle School in recent years.

The players

Katie Gallagher

The new principal of Islander Middle School, who is currently an associate principal at the school and previously worked as a teacher at West Mercer Elementary.

Mary Jo Budzius

The outgoing principal of Islander Middle School, who has led the school in recent years.

Aaron Miller

The outgoing principal of Islander Middle School, who has led the school in recent years alongside Mary Jo Budzius.

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What they’re saying

“I'm committed to ensuring every student feels known, supported, and challenged while continuing IMS's strong track record.”

— Katie Gallagher, Incoming Principal, Islander Middle School

The takeaway

The selection of Katie Gallagher as the new principal of Islander Middle School represents a smooth transition of leadership for the school, as she brings experience and a commitment to maintaining the school's high standards while also supporting the individual needs of each student.