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ostell family
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Our Mission

Partnering with parents to build within their children a firm foundation of academic excellence and Christian discipleship.

Learn how our University-Model school can benefit your family and prepare your child for college and life.

Discover the Cornerstone Difference




Fast Facts About Cornerstone

100% College Acceptance Rate


College Acceptance Rate


Graduates who are Hope/Zell Qualified


Student Teacher Ratio: Kindergarten


Student Teacher Ratio: Elementary


Student Teacher Ratio: Secondary

2 & 3 Day

Unique University-Model Schedule
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Average SAT Score
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Average ACT Score


AP Pass Rate


Full Range of Clubs and Activities for Students


Bring Your Own Device | Grades 7-12


G Suite for Education School

Campus News

Thank You for Making a Difference This Thanksgiving

On Thanksgiving morning, more than 10,000 runners gathered in Marietta Square to participate in the 20th annual Gobble Jog, benefitting MUST Ministries. This year, Cornerstone was the largest group at the race and even earned a coveted spot on the Gobble Jog t-shirt! And for one of our Cornerstone participants, this race was a powerful reminder that no matter what setbacks we face, we can dig deep even when the next step feels impossible.

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Thankful in the Brokenness

With Thanksgiving right around the corner, we all know we’re supposed to be grateful. But if we’re really honest, it’s not always that easy.  If giving thanks feels a little extra challenging this year, Cornerstone webmaster, Katie Tuck, encourages us to be thankful in the hard and in the brokenness because it is there that we often sense the presence and love of God. 

Continue Reading This Article about Thankful in the Brokenness

Cornerstone Preparatory Academy admits students of any race, color, national and ethnic origin to all the rights, privileges, programs, and activities generally accorded or made available to students at the school. It does not discriminate on the basis of race, color, national and ethnic origin in administration of its educational policies, admissions policies, scholarship, athletic, and other school-administered programs.