Faculty & Staff

Our Faculty & Staff

Nurturing and educating over 500 Colorado students, our faculty and staff bring over 3 decades of experience to the Cornerstone Classical Christian Academy. Excited to offer the families of Greeley with a Christ-centered junior kindergarten program, we invite you to learn more about the leaders and educators of Cornerstone Classical Christian Academy. 

Cornerstone Classical Christian Academy

Mrs. Danielle Saykally (Rutz) is the founder, director, and lead teacher at Cornerstone Classical Christian Academy.

A native of Greeley, Mrs. Saykally has attended Cornerstone Community Church since she was a small girl and is excited to offer this classical, Christ-centered preschool program to the community. She has spent eleven incredible years teaching kindergarten and 1st grade in the Greeley-Evans school district where she has mastered the science, the art, and the heart of developing young minds. She is passionate for, and dedicated to, instilling a love for Christ in every child while providing a strong foundation in the skills and knowledge necessary for elementary school success.

Mrs. Saykally graduated from the University of Northern Colorado with a bachelor’s degree in Early Childhood Education and has a master’s degree in Educational Leadership.

Cornerstone Classical Christian Academy

Dr. Tina Errthum is Cornerstone Classical Christian Academy’s program development specialist.

She is an education consultant who partners with classical preschools and elementary schools across the country to align, develop, and teach their content-rich curriculum using mastery-based teaching practices and assessments. She designs and delivers site-based trainings that focus on mapping out content-rich curriculum, using data to inform instruction, creating engaging learning environments, and leading schools and teams effectively.

Dr. Errthum served as Head of School of a toddler-12th grade classical charter school in Florida from 2018-2021. Prior to that, she was the Direct Instruction coordinator for the Greeley-Evans school district for nine years where she trained, coached, and led the K-1 reading program.

Dr. Errthum’s teaching and leadership career began at The Vanguard School in Colorado Springs, Colorado, back in 2003.

Cornerstone Classical Christian Academy


Learn about Cornerstone Classical Christian Academy's Enrollment, Family Handbook, and Tuition and Fees to start your child's inspiring introduction to the world of classical education.

Cornerstone Classical Christian Academy


Instill scholars with a love for Christ by leading them into a loving & personal relationship with God, and equip them with the tools necessary to access the written word.

Cornerstone Classical Christian Academy

Enroll Now

Start your child's journey to kindergarten preparation by enrolling online for the upcoming school year at Cornerstone Classical Christian Academy.

To learn more about our school, educators, and programs, schedule a tour today!

To start the enrollment process, please complete our enrollment form.