Coram Deo was founded in 2009 by Ron and Jeanne DeHaas in Owosso, Michigan, to address the lack of academically-focused Christian homeschool co-ops in the area. Recognizing that many parents hesitate to homeschool through high school due to the complexity of subjects and concerns over graduation requirements, the DeHaas family aimed to support these homeschoolers.

With a background in classical education for their daughter, they were inspired to create a classical, Christian co-op. After attending a classical education conference in the spring of 2009, Jeanne recruited families from their homeschooling circle, and several retired teachers volunteered their time and talents. Coram Deo began operations in September 2009 at the Community Evangelical Presbyterian Church just north of Owosso. Over the years, it has moved locations and experienced changes in size, but has consistently provided a classical education that is Christ-centered to support homeschooling families.