Personnel

Cathy Andrews

Head of Student Services

Education:

  • B.A. Liberal Studies with English Concentration from California State University, Sacramento, Summa Cum Laude
  • ACSI Multiple Subject Certificate

Experience:

  • At CCS since 1999
  • Taught homeschool for 12 years

Richard Batista

Headmaster

Education:

  • B.S. in Finance from California State University, Sacramento

Experience:

  • Board Member since 1995
  • Headmaster since 2009

Karin Bourquin

Kindergarten Homeroom Teacher

Education:

  • B.S. in Child Psychology and Music from Missouri Western State College

Experience: 

  • Child Development Laboratory Teacher at Arizona State University 1990-2000
  • Behavior Specialist at Applied Behavior Consultants 2001-2003
  • Children Ministries Director at church 2009-2014

Douglas Broomell

Board Member

Douglas and his family have been a part of the Cornerstone family since 2005. Douglas joined the CCS Executive Board in 2011. He obtained his law license in 1995. Douglas and his wife, Colleen, are self-employed, practicing attorneys with four children attending Cornerstone.


Martha Bryant

Classroom Aide

Education:

  • B.A. in Social Work from Murray State University

Experience:

  • Retired HR Director for the U.S. Attorney’s Office
  • Associated with CCS since 2012

Iljin Cho

Jr. & Sr. High Team Teacher

Education:

  • B.S., Molecular Environmental Biology, UC Berkeley
  • Master of Divinity, Trinity Evangelical Divinity School, Summa Cum Laude

Experience:

  • Taught high school math for 2 years
  • Tutored Biblical Hebrew for 2 years

Jessica Conklin

4th Grade Homeroom Teacher, Faculty Support Supervisor

Experience:

  • 4th Grade Teacher (3 years)
  • CCS Admissions Director (2 years)
  • Behavior Management Supervisor  Koinonia Foster Program (5 years)
  • Children’s Ministry Director (8 years)

Joshua Coverick

5th Grade Homeroom Teacher

Education:

  • B.A. in History from CSUS, Magna Cum Laude

Experience:

  • CCS Alumnus
  • Sub Teacher in Roseville City School District
  • At Cornerstone since 2021

Flossie Cusick

6th Grade Homeroom Teacher

Education:

  • B.S. in Agricultural Economics and Finance from Rutgers University
Experience:
  • Taught outside CCS for 15 years

Cayla Elliot

1st Grade Homeroom Teacher

Education:

  • Valedictorian Diploma, Cornerstone Christian High School
  • A.A., Early Childhood Education, American River College
  • A.S., General Science, American River College
  • B.A., Child and Adolescent Development focused in Elementary Education; CSUS Cum Laude

Experience:

  • At CCS since 2012

Tracie Elliott

Classroom Aide

Education:

  • B.A. in English/Communications from Simpson University with a Minor in Christian Studies
  • ACSI Certified Teacher K-8

Experience:

  • Taught 6 years prior to CCS
  • Employed by CCS since 2012

David Farschman

Information Systems Manager

Education:

  • B.S. in Mathematics, UC Davis
  • M.S. in Applied Mathematics, UC Davis

Experience:

  • 3 years Applications Developer
  • Business Systems Analyst, 1998 to the present
  • Mathematics Instructor, 2004 to the present
  • Information Systems Manager at CCS since 2003

Tim French

High School Teacher, Choir & Praise Band Director

Education:

  • B.S. in Biology with Chemistry Minor, Bob Jones University
  • M.S., Mathematical Sciences

Experience:

  • Over 19 years teaching experience
  • At CCS since 2005

Cindi Garrisi

Classroom Aide, Consumer Math Teacher, Coding

Education:

  • B.A. in English and B.A. in Communication Studies, Cum Laude, from Westmont College

Experience:

  • Substitute teacher prior to CCS
  • Associated with CCS since 2013

Ray Greenhouse

Chairman

Ray and his family have been a part of Cornerstone Christian School (CCS) since 1997, and he joined the CCS Executive Board in 2005. He holds a Bachelor’s degree in Business Administration from California State University, Fresno, and is presently the Director over the Information Technology Customer Services and Support organization for the California State Teachers’ Retirement System. He enjoys reading and sports but is mostly interested in fostering Christian leadership among Christian men, young and old. Ray and his wife Susie have four children, and reside in Rocklin.


Susie Greenhouse

Office Manager and Bookkeeper

Experience:

  • Associated with CCS since 1997
  • Employed by CCS since 2003

Josh Keller

Board Member

Josh Keller joined the Executive Board in December of 2020. Josh has been a Sales Executive in the health insurance industry for over 15 years. Josh has 3 children who have attended school at Cornerstone for the last 6 years. His lovely wife Melissa is also active in the Cornerstone School community as the High School and Junior High Art teacher. Josh enjoys CrossFit and Soccer in his spare time, but more importantly, loves and enjoys the company of his family. The Keller’s have been members of Veritas Church in Roseville for over 9 years. Josh wants to live fully in the joy of Christ and share that joy with others.


Melissa Keller

Jr. & Sr. High School Art Teacher

Education:

  • BA in Fine Art from College of Charleston, South Carolina

Experience:

  • 10 years in graphic design
  • Associated with CCS since 2014 as a parent and Helping Hand Volunteer
  • Homeschooled for 4 years

Barbara Leigh

Classroom Aide

Education:

  • A.A., Intercultural Studies
  • B.S., Psychology, CSUS, Summa Cum Laude

Experience:

  • 11 years teaching experience
  • Taught homeschool for 14 years

Sharon Lowery

5th Grade Team Teacher
Education:
  • B.A., Whittier College, Political Science Major, History Minor, Cum Laude
  • Executive Fellowship, Capital Fellows Program, Sacramento State, 1997/98
Experience:
  • 14 years homeschool teacher
  • CCS family since 2009

Rene Markey

3rd Grade Homeroom Teacher

Education:

  • B.A. Liberal Studies with English Supplement, California State University, Sacramento

Experience:

  • 20 years working with children in church ministry
  • Substitute teacher
  • At CCS since 2018

Jennifer Meister

Admissions and Development Director

Education:

  • B.A. in Business Administration from Fresno Pacific University

Experience:

  • Four children attending CCS since 2019
  • Over 15 years of experience working in business offices

Steven Meister

Board Member

Steve Meister joined the Executive Board in July of 2022. A pastor with 15 years of experience, Steve serves Immanuel Baptist Church in preaching, theological education, and leadership training. A Christian since 1994, Steve earned his M.Div. from The Master’s Seminary and worked for Children’s Hunger Fund, where he developed a curriculum to train church leaders in a biblical theology of compassion ministry.

Along with pastoral ministry, Steve also serves as a board member of Bible Translation Fellowship.  He and his wife Jenn have been married for 20 years and have 4 children that have attended CCS since 2019.


Diana Petrash

Kindergarten Aide

Education:

  • Associate in Arts Social Sciences from American River College, Sacramento
  • Future goal is to become an Educator

Experience:

  • Serve in Teens Ministry at home church

Joan Pollard

8th Grade Homeroom Teacher

Education:

  • B.A., Elementary Education, Western Baptist Bible College

Experience:

  • 14 years teaching experience in Christian education prior to CCS
  • At CCS since 2011

Heather Reeves

2nd Grade Homeroom Teacher

Education:

  • B.A. Liberal Studies with a minor in History from the Master’s College
  • CA Multiple Subject Teaching Credential

Experience:

  • Taught outside CCS for 4 years
  • At CCS from 1994 – 1997, and 2005 – present

Bella Serban

Hot Lunch Coordinator

Experience:

  • 10 years serving in children’s ministry at church
  • CCS family since 2020

Ryan Sisneros

Jr. & Sr. High PE teacher; High School Leadership

Education:

  • B.S., Biology: Pre Med – The Master’s University
  • M.B.A., – West Texas A&M University

Experience:

  • CCS Alumnus – 2005

Daniel Sonke

Board Member

Dr. Dan Sonke grew up in a Christian home and church near Modesto, California. His family moved to his grandparents’ almond farm in elementary school. After college, Dan went to work for a Christian mission organization working in agriculture. During this time, through the faithful preaching of a local church, he found himself embracing the teaching of the doctrines of grace. Shortly thereafter, Dan met his wife Mary Lee through a mutual friend who played “matchmaker.” They now have four children who have attended Cornerstone, with the oldest having graduated in 2019. Dan has a doctorate in agriculture science and is an expert in environmental issues related to agriculture. In his spare time, Dan likes gardening, travel, and reading.


Mary Lee Sonke

Librarian, Book It Coordinator

Education:

  • B.A. in Elementary Education from Covenant College
  • M.Ed. in Integrated Curriculum and Instruction from Covenant College

Experience:

  • Associated with Cornerstone since 2011
  • 7 years combined teaching experience in Christian education and homeschooling
  • Developed curriculum for elementary history and literature

Greg Uttinger

High School Teacher, Bible Oversight

Education:

  • A.A., Physics & Philosophy, Shasta College
  • B.A., Secondary Education- Physics & Mathematics, Dordt College

Experience:

  • 30+ years of teaching experience in Christian education
  • At CCS since 1995

Kate Uttinger

7th Grade Homeroom Teacher, Head of Academics

Education:

  • A.A., Liberal Studies, Sierra College
  • B.A., English, CSUS, Summa Cum Laude

Experience:

  • In Christian education since 1995
  • Staff writer for Leben magazine

Rachel Wills

High School Teacher, High School Counselor

Education:

  • B.A. in Political Science and French from Grove City College
  • M.A. in Government with a Certification in Mid-East Politics from Regent University

Experience:

  • CCS Alumnus and Valedictorian
  • Teaching at CCS since 2012

Delinda Winter

Preschool Teacher

Education:

  • College of the Sequoias, 1 year

Experience:

  • 12 ECE units, Los Rios Community College
  • 40 years working with children in church nurseries, preschools, and children’s ministries
  • At CCS since 2017

Erin Winter

Preschool Director

Education:

  • B.A. in Theatre Arts, Minor: Child Development, California State University Sacramento

Experience:

  • Over 15 years working with preschool age children
  • At CCS since 2013