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On August 4, 2022, Keystone students will begin to return to campus for the 28th year. ...

Click HERE to read theĀ AMI/USA message to Montessorians.

Celebrate Summer!

May 26, 2022

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Updates From Ms. Laura & Mr. Stefan


Dear Keystone Families,

Where has the summer gone? We are preparing for another wonderful year together at Keystone, and the campus is buzzing with activity. 

There have been campus updates throughout the time our students have been away, and we look forward to the children’s return to enjoy the changes. A summer refresh for our school environments makes the back-to-school season even more special.

Please join us in welcoming our new staff members to the Keystone family. During our return to campus for the school year, you will have the opportunity to meet the new members of our team and get to know them. We are delighted to have passionate Montessori professionals join us to guide and care for our students. When you see new faces on campus, please take a moment to say hello.

Mark your calendars for the first community event of the 2022-23 school year, our classroom meetings. The first classroom meeting is an excellent time to come together and gather important information about your child's school year. Children's House and Adolescent meetings will take place on Tuesday, August 9th,  and Toddler and Elementary meetings on Wednesday, August 10th. We look forward to seeing our parents in class.

Communication and community are critical factors in our success. Please, do not hesitate to reach out to your classroom Guides, office staff members, Mr. Stefan, and me if you have questions or concerns throughout the school year. 

We look forward to seeing you on campus very soon and wish each of you continued joy as the summer winds down.

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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