Project Details
Type
K-12Completed
August 2025Size
21,400 Square FeetLocation
Everett, WashingtonOwner
Mukilteo School DistrictArchitect
Mahlum ArchitectsAddition and site improvements
The Explorer Middle School project's Phase 1 built a new 21,400-SF gymnasium and replaced the track. The new gymnasium building includes a new main gym, an auxiliary gym, a fitness studio, locker rooms and restrooms. The replacement track features new a new turf field, a rubberized track, and improved stormwater management and utilities. Explorer Middle School serves approximately 950 students in the Mukilteo School District. Cornerstone completed the project in time for the start of the 2025/2026 school year.
Project Gallery

"The team of district staff and outside contractors who designed and built the project centered the priorities of students when making decisions on how the new gym would look. It was really important to that team to take the student voice and bring it to life with this project. It truly is an innovative space that has students’ learning, growth and well-being in mind in every corner of this space."