Dayspring Christian Academy is located in Mountville, PA and they use something called The Principle Approach. The following was taken directly from their website and explains a little bit more about the Principle Approach.
America’s historic, classical Christian method of education to prepare young people to be servants, scholars, and statesmen in our constitutional federal republic. This requires developing a biblical worldview as well as excellence in character, skills, and talents. The Principle Approach is very intentional in its purpose: equipping young men and women to help restore America to her gospel purpose, thereby helping to fulfill Christ’s Great Commission.
I've never heard it called the Principle Approach before but it makes a lot of sense to me and has really worked for our family. I know that we really want to instill a sense of purpose in our children and we want them equipped to share the gospel as well as have a biblical worldview, character, skills and talents so this seemed like a perfect fit for our family.