Meet Our Staff

ACSTO is privileged to have a dedicated and talented staff.  We work together to  provide the remarkable customer service ACSTO is known for all year round, and we make it a matter of personal responsibility to provide you with valuable resources as well as accurate and timely processing of your donations and/or applications. 


Board of Directors

Scott R. Saunders
BJ Saunders
Marc Weidinger
Barry Barnes
Barb Barnes


David Harowitz

Office Staff

Steve Yarbrough
Executive Director

Steve Yarbrough has enjoyed a highly successful career in education, family law, public policy creation, and organizational leadership. As a passionate proponent of Christian Education, he co-founded ACSTO in 1998 and continues to serve as its executive director.

Steve YarbroughHe has served in the Arizona Legislature since 2003 where he has been Chairman of the Ways & Means Committee, Speaker Pro Tempore, and Chairman of the Senate Finance Committee. He is recognized in Arizona and nationally as a leading advocate for pro-school choice policy innovation.

He and his wife Linda, a longtime Christian school teacher, have three adult sons and eight grandchildren. All of their grandchildren attend Christian schools in Arizona or Tennessee.


EileenEileen Edmondson
Assistant Executive Director

Eileen has been an extremely capable administrator at ACSTO since 1999. She has been happily married for 34 years, has three wonderful children and five absolutely adorable grandchildren. She loves to travel with her husband Bob, who was a pastor for 25 years, and currently trains indigenous pastors in Asia. She attends Mission Community Church, and in her spare time, she loves to go hiking and play the piano.


Amy Hawkinson
Amy Hawkinson
Data Processing Manager

Amy has been serving ACSTO since 2006. She has lived in Arizona since 1985, and she graduated from ASU with a degree in communications. She has been happily married for 15 years and has a daughter who currently attends a local Christian school. She loves spending time with her family and friends, especially if that includes dessert or Mexican food. Amy supervises projects and staff, manages finances, and assists our donors and parents on the phone.

Sally Henry
Marketing Manager

Sally has been running strong as ACSTO's Marketing Manager for several years and has already been seen far and wide across the state at churches and school events. As an involved parent and educator, she enjoys bringing experience, enthusiasm, and creative solutions to the table for our valued partners.


Tommy Smith
Media Manager

Tommy has been providing marketing and design for ACSTO since 2012. As a graduate of a private Christian school, and still receiving the support of his teachers to this day, he is passionate about making Christian Education a reality for Arizona families. When not at work, Tommy likes to try foreign foods, play soccer, drink coffee, daydream, and watching planes at Sky Harbor. 

Loren RugenLoren Rugen
Content Director

Loren began his ACSTO journey in 2009 and enjoys fulfilling the organization's writing, editing, and online development needs. He graduated from Moody Bible Institute in downtown Chicago with his wife Rachel before moving to the desert and earning his AZ teacher certification in secondary English. In his downtime he enjoys an eclectic variety of hobbies, including hiking, entomology, reading & writing, and letting his inner child out with his two sons. 

Matthew Tracy
Matthew Tracy
Credit Card Specialist

Matthew began working for ACSTO in 2013. He has been assisting customers over the phone and specializing in credit card processing. Currently, he attends and volunteers at Sun Valley Church in Gilbert. In his spare time, he pursues various musical and auto-mechanic endeavors and spends time with his wife, friends, and family.


Wendy RankinWendy Rankin
Customer Service Specialist

Wendy is a valuable part of the ACSTO family. She has lived in the valley since 1971, graduated from ASU in 2006 in Graphic Information Technology, is happily married to a wonderful man for 33 years, and has two adult children. Wendy attends Arizona Community Church and serves in their Music Ministries as a vocalist. She has used her computer skills to meet specific needs on three short-term mission trips and hopes for more. In her spare time she loves to crochet and learn about new technology.


Amber Johnson
Customer Service Specialist

Amber has been working at ACSTO since March of 2015 along with prior experience during the 13-14 school year. With training and experience in child development, she is eager to help children afford the benefits of a Christian Education through ACSTO. She is born and raised in Arizona and married her childhood sweetheart in May of 2014. In her spare time she loves to bake, play volleyball, and hang out with her little sister.

Tori Thelen
Customer Service Specialist

Tori began her journey with ACSTO during summer of 2015. Tori has a great passion for supportive roles and is eager to assist parents in providing a Christian education for their children.  Tori graduated from Cal State Fullerton with a degree in communications. When not at work Tori enjoys DIY projects, family time with her husband and daughter, and watching everything food network.


Lyndsey Henry
Customer Service Specialist

Having worked for ACSTO in the past, Lyndsey is no stranger to Arizona's tax credits, and is excited to be a part of this wonderful program once again. She is also no stranger to private education. After graduating from a private Christian school here in Arizona, Lyndsey earned a degree in elementary education from ASU and then taught 4th grade at a private school for five years. She was born and raised in Arizona, has been married to her high school sweetheart for 11 years, and has three children. Lyndsey enjoys music, especially if she gets to sing or play the harp!


Maryellen Hawkinson
Central Valley Coordinator

Maryellen has been an ACSTO coordinator for the past 10 years. She is married to Bruce, and they have 2 children and 4 grandchildren. As her schools and churches, or anyone who knows Maryellen, will tell you, her warm, friendly personality is only matched by how passionate she is about Christian Education and desire to help as many people as possible learn about the Az State Tax Credit and how ACSTO can make it work for them.

Tom Askew
Tom Askew
Southern Arizona Coordinator

Dr. Tom Askew has been a Christian educator for over forty years, both in the U.S. and overseas. His favorite subjects to teach are English, Latin, and Bible. He offers his expertise on Christian Education through a variety of non-profit, radio, administrative, and publishing roles. Since 2007, he has represented ACSTO to churches and schools in Pinal, Pima, Graham, and Cochise counties. 


Steve Vogel
Steve Vogel
North Valley Coordinator

Steve is experienced with Arizona tax credits as the Development Officer for School Choice Arizona, and possess the detail orientation necessary to explain both the individual and the corporate tax credits clearly. His desire to see all Arizona children succeed is evidenced in his work and in his family life as a parent and foster parent.



Debi LaVergne
Debi LaVergne
East Valley Coordinator

Debi is the newest member of our coordinator team. Debi is an Arizona native. Her education is diverse, holding degrees in Criminal Justice, Business Management, and a Master of Education in Counseling. She began her career as a police officer and transitioned into the education field, which she has loved for the past 20 years. She is happily married to her husband, Dean, and they are the proud parents of two teenagers, who have been in Christian Education since preschool.

Jeff WeinsteinJeff Weinstein
WELS Church Coordinator

Jeff Weinstein, a member of Grace Lutheran Church of Southern Arizona and a life-long member of the Wisconsin Ev. Lutheran Synod, has joined ACSTO as the WELS/ELS Church Coordinator.  He serves as the Elder of Outreach at Grace as well as on the Board of Directors at Arizona Lutheran Academy in Phoenix. Jeff, along with his wife Stephanie and his three children and two grandsons, have attended WELS schools since kindergarten.  He enjoys singing in choir, playing basketball, as well as traveling with his wife.


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    Contact Us

    ACSTO, Inc.

    PO Box 6580
    Chandler, AZ 85246

    • Office: 480.820.0403
    • Fax: 480.820.2027
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