The gesture comes one week after a shooting at the school left three dead, including the shooter, and three wounded. In the wake of the shooting, a local school ceded the division football title to Marysville-Pilchuck in a sign of support.
The Marysville-Pilchuck football team also visited the Seahawks facility earlier this week. Players and coaches were on hand to meet with the high schoolers, including safety Richard Sherman and head coach Pete Carroll.
The Marysville-Pilchuck team was able to practice inside the Seahawks facility.
Seahawks players will have an "MP" decal on their helmets, while inactive players, staff and coaches will wear an "MP" pin on their lapels.
Fans at the Seahawks game will be able to sign oversized cards that will be delivered to the school next week.
Seattle will observe a moment of silence before the game, schedule for a 4:25 pm EST kickoff time.