Skip to main content
Keystone Montessori Charter
Mobile header navigation toggle
About Keystone
A Letter from our Head of School
About Montessori
Vision & Mission
About Us
Our Team
Observation & Tour Policy
Child Find/Notice of Non Discrimination
Parent Testimonials
Schedule a Visit with Keystone
Programs
An Overview from our Associate Head of School
Toddlers (15mo. - 3 years old)
Children's House (3 - 6 years old)
Elementary (Lower - 1st - 3rd grade & Upper - 4th - 6th Grade)
Adolescent Program
Portrait of a Graduate
Arrival & Dismissal Information
Schedule a Visit with Keystone
Admissions
A Welcome from our Admissions Director
Keystone's Bilingual Private Programs
Charter Programming
Enrollment Process
FAQ's
The Montessori Difference
Tuition Information 2025/26
Schedule a Visit with Keystone
Keystone Community
Classroom Updates
2025/26 Yearly Calendar
Keystone Spirit Wear Orders
FACTS Payment Portal Login
Student Enrollment Portal
Online Pizza Orders
Printable Pizza Order Form
After School Activities
Volunteer at Keystone
Parent/Student Handbook
School Board
Family Resources
Important Forms and Links
Giving
A Greeting from our Development Director
Why We Give
Sustaining Fund
Tax Credit
Fall Festival
Community Rewards
Business Sponsors
Alumni
Stay Connected
Giving Back
2024 Alumni Reunion Photo Album
Contact Us
Map
Administration Directory
Schedule a Visit with Keystone
Contact Us Form
About Keystone
A Letter from our Head of School
About Montessori
Vision & Mission
About Us
Our Team
Observation & Tour Policy
Child Find/Notice of Non Discrimination
Parent Testimonials
Schedule a Visit with Keystone
About Keystone
Programs
An Overview from our Associate Head of School
Toddlers (15mo. - 3 years old)
Children's House (3 - 6 years old)
Elementary (Lower - 1st - 3rd grade & Upper - 4th - 6th Grade)
Adolescent Program
Portrait of a Graduate
Arrival & Dismissal Information
Schedule a Visit with Keystone
Programs
Admissions
A Welcome from our Admissions Director
Keystone's Bilingual Private Programs
Charter Programming
Enrollment Process
FAQ's
The Montessori Difference
Tuition Information 2025/26
Schedule a Visit with Keystone
Admissions
Keystone Community
Classroom Updates
2025/26 Yearly Calendar
Keystone Spirit Wear Orders
FACTS Payment Portal Login
Student Enrollment Portal
Online Pizza Orders
Printable Pizza Order Form
After School Activities
Volunteer at Keystone
Parent/Student Handbook
School Board
Family Resources
Important Forms and Links
Keystone Community
Giving
A Greeting from our Development Director
Why We Give
Sustaining Fund
Tax Credit
Fall Festival
Community Rewards
Business Sponsors
Giving
Alumni
Stay Connected
Giving Back
2024 Alumni Reunion Photo Album
Alumni
Keystone Alumni at the 2024 Reunion
Contact Us
Map
Administration Directory
Schedule a Visit with Keystone
Contact Us Form
Contact Us
Header Quick Link Button
Schedule a Tour
Search
Contact Us
»
Administration Directory
Administration Directory
Laura Hertzler
Head of School
Email Laura Hertzler
480.460.7312
Stefan Linder
Associate Head of School
Email Stefan Linder
480.460.7312
Heather Bonacorda
Admissions and Marketing Director
Email Heather Bonacorda
480.582.9610
Sue Smith
Office Manager
Email Sue Smith
480.460.7312
Gina Giorsetto
Administrative Assistant
Email Gina Giorsetto
480.460.7312
Kristin Morgan
Business Manager
Email Kristin Morgan
480.460.7312
Melissa Sutton
Development Director
Email Melissa Sutton
480.460.7312
Michael Cho
Facilities Manager
Email Michael Cho
