Cornerstone Montessori

03/19/2026

https://www.cornerstonepuyallup.com/events/class-pictures

Back to All Events Class Pictures Tuesday, April 21, 2026 8:30 AM Wednesday, April 22, 2026 11:45 AM Google Calendar ICS

12/17/2025

Cornerstone Sumner Campus is closed for the day due to lack of power. PSE does not have an estimated restoration time.

12/17/2025

SBLSD will be two hours late. We have confirmed Cornerstone is without power. Per policy, before school care is canceled. Students can be dropped off between 9am and 9:15am.

If Cornerstone does not have power fully restored by 8am, school will be cancelled for the day.

We hope all are safe. We do have families willing to support those with flooding and without power. Please reach out to Ms. Stacy and she will connect you.

12/17/2025

Possible Power Outage ⚡️

Good morning Cornerstone families,

We are currently investigating whether the school has power. A team member is headed to the school now to verify and we will update you shortly.

Thank you,
Emily

10/27/2025

All Sumner & Bonney Lake schools are closed Monday, Oct. 27, due to widespread power outages & road closures. Well over half of Cornerstone staff members have been without power multiple days. Per our Inclement Weather policy, Cornerstone's toddler, primary and elementary programs will close entirely as well. We have every hope and belief that we will be able to reopen with plenty of teachers on Tuesday, October 28th. Thank you for your understanding as we prioritize safety for our staff and students.

10/25/2025

We are ready for Trunk or Treat!

10/21/2025

Lower & Upper Elementary students are hard at work this year! Message us if you have a 1st through 6th grade student who would benefit from individualized learning. The Montessori approach fosters critical thinking, problem-solving, and a lifelong love of learning by integrating subjects and allowing students to work without interruption.

08/31/2025

08/30/2025

We are at Loyalty Park until 12!!

08/30/2025

Tomorrow is our first park day! We'll be meeting at Loyalty Park in Sumner from 10:00 AM to 12:00 PM.

Start your button collection! I'll be there with our button maker.

We hope to see both new and returning students. Please stop by and say hello!

08/30/2025

This week our staff has been diligently preparing for the new school year. The classrooms are now beautifully arranged and ready to welcome the children. We look forward to seeing you at back to school night on Tuesday, September 2 anytime between 4 pm and 6 pm.