It consists of elementary, middle, and high school and serves grades Pre-K through 12th.

The school's name memorializes Confederate politician, enslaver, and white supremacist Lucius Quintus Cincinnatus Lamar.

[1] It was founded as a whites-only establishment, which led to the denial of its tax exemptions, a decision upheld by the United States Supreme Court in 1971.

In 1969, a federal court ruled that, since, in the court's opinion, the Lamar School would refuse to admit qualified black students, the tuition grant program violated the equal protection clause of the fourteenth amendment.

[3] The Internal Revenue Service revoked the school's tax exemption after it declined to document that it had a racially nondiscriminatory admissions policy.