Explore Keystone People

Laura Hertzler

Head of School

Stefan Linder

Associate Head of School

Heather Bonacorda

Admissions & Marketing Director

Melissa Sutton

Development Director

Quintin Dailey

Facilities and IT Director

Sue Smith

Office Manager

Saundra Strobridge

Administrative Assistant

Bethany Brown

Special Education Co-Director & Testing Coordinator

Evie Benavidez

Special Education Co-Director

Mia Alfonso

Spanish Guide

Amie Allor

Elementary Guide - Red Tailed Hawks

Paloma Anderson

Elementary Assistant- Diamondbacks

Erika Andrus

Children's House Assistant- Saguaros

Carol Arnold

Adolescent Guide - AZ Eagles

Anny Aziz

Children's House Bilingual Assistant - Palo Verdes

Francisco Bailón

Elementary Guide- Gila Monsters

Janelle Bredenkamp

Elementary Assistant - Red Tailed Hawks

Lidia Carrillo-Davila

Toddler Guide - Agaves

Silvia Castellanos

Toddler Bilingual Assistant- Agaves

Janelle Chamberlain

Elementary Assistant - Iguanas

Caroline Clock

Special Education Support Staff

Kaylee Cumpston

Support Staff

Kerry Cumpston

Reading Specialist & Special Education Support Staff

Shahnaz Currim

Elementary Guide - Coyotes

Leon Dantus

Adolescent Guide - AZ Eagles

Rosario Davila

Toddler Bilingual Assistant- Agaves

Gerry DeLaTorre

Music Specialist

Marcela Erramuzpe

Children's House Bilingual Assistant- Saguaros

Danielle Ghorayeb

Children's House Support Staff & Movement

Erika Huerta

Elementary Assistant - Coyotes

Maile Joseph-Griego

Children's House Assistant- Palo Verdes

April Knight

Elementary Guide - Scorpions

Bahareh Kompani

Elementary Assistant - Great Horned Owls

America Lozoya

Children's House Bilingual Assistant- Prickly Pears

Jess Morales Ruan

Elementary Guide- Great Horned Owls

Sara Oaxaca

Elementary Guide - Diamondbacks

Olivia Olson

Elementary Assistant - Gila Monsters

Katty Padilla

Elementary Guide - Iguanas

Ben Peterson

Elementary Aftercare & Support Staff

Alex Simonet

Lower Elementary Art Guide & Elementary Aftercare

Mia Soard

Children's House Assistant - Prickly Pears

Jeremy Stepp

Special Education Support Staff

Whitney Stockhauser

Adolescent Guide - AZ Eagles

Imelda Urbiztondo

Children’s House Guide - Palo Verdes

Mariah Villa

Elementary Assistant - Scorpions

Blanca Villalobos

Children’s House Guide - Prickly Pears

Yoo-Kyung Yoo

Children‘s House Guide - Saguaros

Ana Zikic

Upper Elementary & Adolescent Art Guide & Yoga Instructor