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As you may know, we are in the midst of the selection process for Mount Si High School's next principal. We've launched a comprehensive and inclusive search to ensure we find the right leader for the 2025–26 school year and beyond. We aim to keep you informed and engaged every step of the way.

We want to make families aware of a growing national trend where students are damaging school-issued devices by inserting objects into USB ports—sometimes causing devices to short out or burn internally.

Mount Si's Sports Medicine Club is hosting a Sports Physicals event, May 28, 5-7 p.m. at the MSHS Gym - for grades 6-12. Cost is $30. Bring 2 forms.

Join us on Monday, May 12, from 6–8 p.m. at Mount Si High School for a celebration of student creativity at our annual Districtwide Art Show

Mount Si High School Drama is proud to present Once Upon a Mattress, a whimsical and witty musical comedy that turns the classic fairy tale “The Princess and the Pea” on its head. Set in a medieval kingdom ruled by the overbearing Queen Aggravain, the story follows the spirited Princess Winnifred the Woebegone, who arrives from the swamps to win the hand of Prince Dauntless.

The Mount Si High School Veterinary Science Team has earned top honors in Washington State, winning the FFA Veterinary Science Career Development Event (CDE) and securing their spot at the National FFA Convention this fall.

Sophomores & Juniors: Apply by April 30 (noon) to attend a rewarding 4-day leadership training at beautiful Camp Coleman June 5-8! 

Maya has been nominated for the Seattle Seahawks 2025 Flag Football Player of the Year Award!