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Welcome to Cougar Mountain Middle School!

Welcome to Cougar Mountain Middle School! Located in Issaquah, WA, Cougar Mountain Middle School serves approximately 625 students in grades 6-8. More about Our School.

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WEB Leaders in library with other students
WEB Leaders begin Student Mentorships!

CMMS successfully kicked off student mentorships with lots of positive relationships being built!

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Science in Action

Students engaged in a science lab.

Upcoming Events

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Beaver Lake Middle School

Cougar Mountain @ Beaver Lake

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Cougar Mountain Middle School

Pine Lake @ Cougar Mountain

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Administration Building, 5150 220th Ave SE, Issaquah, WA

Please note the agenda and materials may be modified up to 24 hours prior to the meeting; after that time, any agenda modifications will be addressed at the meeting.

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Cougar Mountain Middle School Commons
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President Taylor's residence

The School Board will hold a special meeting on Wednesday, June 3, 2026 from 6:00 PM to 9:00 PM. The meeting will be called to order at 6:00 PM and the Board will immediately go into Executive Session, expected to last 3 hours and end at 9:00 PM. The Board will then call the meeting back to order to adjourn.

The Issaquah School Board will review the performance of a public employee pursuant to RCW 42.30.110(1)(g) for the purpose of conducting the annual Superintendent’s evaluation. Board Directors will meet in person at Board President A.J. Taylor’s residence. This is the second of two sessions. The first session was held on May 5, 2026 from 6:00 – 9:00 PM.

Executive Sessions are not open to the public and no action will be taken. Any actions resulting from this meeting will be taken during a future board meeting.

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Cougar Mountain Middle School Commons
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Administration Building, 5150 220th Ave SE, Issaquah, WA

Please note the agenda and materials may be modified up to 24 hours prior to the meeting; after that time, any agenda modifications will be addressed at the meeting.

 

*Updated Date:

The June 11 regular board meeting will occur on June 9, 2026, due to high school graduations on June 11, 2026. The Board approved this change at the December 11, 2025 regular board meeting. 

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Beaver Lake Middle School
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Cougar Mountain Middle School
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Cougar Mountain Middle School Commons
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Happening Now at CMMS

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CMMS Recognized for Growth by State

CMMS has been recognized by the Washington State Board of Education for our 2024–25 performance, including significant growth for our students of color. Only 16% of schools statewide received this honor. This recognition reflects our shared belief in the unlimited potential of every student and the collective actions that lead to real growth. 

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Read More about CMMS Recognized for Growth by State

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By the Numbers

636

Students enrolled in the 2022-23 school year.

In December of 2021, Cougar Mountain student leadership completed the writing of the school's first ASB Constitution, held their first student leadership election and conducted their first ASB meeting. Go, Falcons!

49

Classroom teachers in the 2021-22 school year.

In the 2021-22 school year, our teachers had an average of 11.6 years of experience.

65.3%

Of our teachers have a master's degree or higher.

To find the contact information for one of our teachers or staff, visit the directory (use the menu option at the top right to access the directory).

87.7%

Of our students attend regularly.

This data is from the 2021-22 school year, the most recent year available from OSPI.

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School Highlights & Programs

Our students will be prepared for and eager to accept the academic, occupational, personal and practical challenges of life in a dynamic global environment.

Principal Erin McKee

Meet Principal Erin McKee!

Hi, Falcon families! My favorite part of being a principal is greeting our students each morning. A few fun facts about me: If I could only eat one cuisine for the rest of my life, it would be Japanese food. My bucket list includes attending a Beyoncé concert. I’m really good at parallel parking. 

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Responsible Citizenship

Students will understand and respect their freedoms and responsibilities as members of the ISD community and global world at large. They will move forward in all aspects of their lives by applying the ethical and equitable values fostered in their education.

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Comprehensive Awareness

Students will receive extensive social-emotional support each year of their educational career. In addition, they will learn life skills to support all aspects of their growth, including collaboration, goal setting, physical health, creativity, and resilience.

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