Home Of The Wildcats!
Welcome back all Mount Si High School Alumni! Register here and reunite with friends, plan those high school reunions, and share memories.
Recognizing Our Military Alumni
Eric Olson
Class of '87
Years served:  12 years
Branch:  Navy
Read more
Post military alumni
Guess Who!
Can you recognize these classmates from some of our members' recent photos...
Class Photos
LOADING
Here are a few of the most recent photos from our reunions; Click the 'Load next' button to flip through them.
Mount Si
Football Season Sale!
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Classmate Spotlight
Bob Collins
Class of '78
See more classmates
High School News & Scores:
Mount Si Alumni in Washington - WA
Wildcat Volleyball State 2008
Posted Nov 20 ,2008
Wildcat volleyballer's lost ugly in 5 games to a lesser Lakes HS team in first round @ Toyota Center in Kennewick,but mo...
Wall of Fame
Read and submit stories about the achievements of our classmates' who came from Snoqualmie WA - Washington.
Class Reunion Survey
Take your class reunion survey now and help your classmates plan a better high school reunion.
10 Year Reunion, 20 Year Reunion, 25 Year Reunion, 30 Year, 35 Year, 40 Year
Lost Class Rings
Mount Si High School in WA, lost & found rings page.
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