Kentucky Country Day School was formed in 1972 by the merger of four schools: The Kentucky Home School for Girls, Louisville Country Day School, Aquinas Preparatory School, and the Kentucky Military Institute. KCD moved to its present 85-acre campus in eastern Jefferson County in 1978.

In 1998, KCD embarked on an ambitious plan to transform its campus by upgrading its athletic facilities and building a new Upper School. These projects were completed in the summer of 2000.

Kentucky Military Institute
The Kentucky Military Institute (KMI) was founded in 1845. It was the third military school to be founded in America and during its operation was the oldest privately-owned military school in the nation.

KMI graduates volunteered in the Spanish-American war, serving both in Cuba and the Philippines. During World War I, approximately 300 alumni and former cadets served in the United States and in Europe, six of whom gave their lives for their country. It is estimated that over a thousand KMI alumni and former cadets served during World War II, and a plaque honoring the 60 who lost their lives in that war was dedicated in 1946.

The KMI honor code, which formed a core component of the school’s educational philosophy, was instituted at KCD in 1984 by the son of a KMI alumnus.

The Kentucky Home School
The Kentucky Home School for Girls (KHS) was founded by Miss Belle Peers in 1863, and under her guidance, the school quickly established a reputation as the premiere educational institution for young women in Louisville. After Miss Peers' retirement in 1904, the Kentucky Home School was purchased by Annie S. Anderson and Annie S. Waters, and it was during their administration that the Home School that most alumnae remember took shape. Many KHS traditions live on at KCD: field hockey is the most popular team sport at KCD today, and senior girls still dress in white and carry roses at graduation.

Louisville Country Day School
Louisville Country Day School (LCD) was founded in 1948 by a group of Louisville business and civic leaders seeking to create an independent boys' school that would provide students with a rigorous, college preparatory education. The school opened its doors to 90 students in grades 1-10 on September 12, 1951. The first senior class of five members graduated in 1954.