Class Reunions Mount Si High School Class Reunions

If you know any information about an upcoming reunion, please post it so that your fellow MSHS alumni can find it. Also, check the info below to see if your reunion will be in Snoqualmie, WA or somewhere else.

If you are a Mount Si alumn, we encourage you to register and be sure to sign up for the alumni newsletter.

Find more Mount Si reunion info at®. We've partnered with® to ensure you find information on your MSHS class reunion.

There is currently no Mount Si class reunion information.

If you have information about an upcoming Mount Si in Snoqualmie, WA reunion, please share it here.