Charleston Collegiate School is an independent day school that strives to recognize, nurture, and challenge each of its students. Organized as a Lower School (PS-5), Middle School (6-8), and Upper School (9-12).   Charleston Collegiate School is an independent day school that strives to recognize, nurture, and challenge each of its students. Organized as a Lower School (PK-4), Middle School (5-8), and Upper School (9-12), CCS prides itself on being an independent, co-educational, non-sectarian, prekindergarten through 12th grade, located just outside of Charleston’s metropolitan area. Charleston Collegiate School offers a thirty-acre campus of vast playing fields and wooded trails and is located only twenty minutes from Charleston’s historic district on one side a