Grace Christian Academy of Maryland is a private Christian school (PK3 - 8th grade) with approximately 225 students. Established in 1986, GCA graduated its first senior class in 2000. Grace Christian Academy was first accredited in 1996 through the Association of Christian Schools International (ACSI) and Middle States Association of Colleges and Schools. GCA is accredited through the Maryland Department of Education, Middle States Association of Colleges and Secondary Schools, and ACSI through the year 2026. The school was re-accredited in 2022. Formerly known as Grace Brethren Christian School, the name of the school was officially changed to Grace Christian Academy of Maryland in 2009 to avoid confusion with the Grace Brethren Christian School in Clinton, Maryland. The school and church occupy a 1-acre campus that includes a church building, portable classrooms, and a 40,000 square foot education building. The education building houses 13 classrooms, two science labs, an art room, a full-sized gymnasium, administrative offices, and a teacher's work area. All ministries of the church utilize the campus facilities.

Grace Christian Academy of Maryland is the largest ministry of Grace Church Waldorf and one of the largest Christian schools in Charles County, Maryland. Grace Christian Academy follows an evangelistic model of Christian education. The school is an open-enrollment campus for those who are not solely members of Grace Church Waldorf. Students may enroll at Grace Christian Academy from all walks of life but are required to acknowledge with signature the school's Parental Statement and Statement of faith.