A classical Christian school proclaims Jesus Christ as Lord and Savior. It also adheres to the principles of a classical education as set out by educators such Dorothy Sayers, John Milton Gregory, St. Augustine and Douglas Wilson. Parents and students enroll in a classical school because they too embrace the mission and teachings of the school. Teachers are required to sign a statement of belief as well. The result is a school community which is tightly focussed on its aims and objectives. Put another way, if you cannot subscribe to these beliefs, then you need to look elsewhere for your child's education if you are a parent.
You won't find computers and fancy technology being used in classical Christian schools. They use the trivium (grammar, rhetoric and logic). A classical Christian school seeks to produce excellent students well-schooled in their faith.