The Mount Si High School PTSA was incorporated in 1993 as the Wildcat Inspiration Network, a nonprofit 501(c)3 corporation founded to promote academic excellence at Mount Si High School, increase parent involvement in school activities, and foster positive relations and service between MSHS students and their community. Our name has changed, but our mission remains the same: to provide support and promote community among the students, staff, and families at Mount Si High School through collaboration, advocacy, financial support, and providing educational opportunities for our students and community.


For as little as $15 you can join the MSHS PTSA and help us enhance and promote the positive, inclusive, excellent educational experience at Mount Si.