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On Saturday, November 11th hundreds of Keystone community members gathered on camp...

Planning for Keystone's annual Fall Festival is well underway and promises to ...

Keystone Coffee Talk 2023

August 11, 2023

Keystone Coffee Talk, a popular parent education event that supports community con...

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Updates From Ms. Laura & Mr. Stefan


Dear Keystone Families,

The beginning of November seems a perfect time to pause and express gratitude. We are grateful to Dr. Montessori and the vision she shared with the world of a better way for our children. In her shadow, thousands of guides and parents across the globe are committed to asking more of ourselves on behalf of the children. 

I once read, "Gratitude is happiness doubled by wonder." That is a perfect reflection of what we have experienced in this first portion of the year at Keystone. 

Keystone’s success is built on a foundation of the combined efforts of those of us in the school building and the families who support us. Each day, dedicated guides and staff nurture a culture of equity, love, and caring. The incredible devotion of our staff and their unique ability to guide our children is inspiring. Our driving principle is to continue to provide an exceptional learning environment for our students and families. 

The support and commitment of our Keystone community is humbling in so many ways. The small moments of a quick hello while you pick up and drop off your children, time spent attending observations and conferences to deepen the connection with your child’s experience in class, and the hours volunteering to make our special events successful all combine and leave our hearts full. Your passion makes us stronger.

In this season of thanks, please know you are appreciated beyond measure.


In Health and Peace,

Laura Hertzler                            Stefan Linder
Head of School                          Associate Head of School





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Per A.R.S. § 38-431.02. Notice of meetings for the Board of Directors of Keystone Montessori Charter School and any of its committees will be posted on this website under Explore Keystone – School Board – Meeting and Agendas. Notices will also be posted on the Lobby Bulletin Board, 1025 E. Liberty Lane, Phoenix, Arizona 85048, which is open to the public between 7:30 a.m. and 5:30 p.m. Monday through Friday.


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