Robert Wood Johnson High School was built in 1972 by the Hall County Board of Education under the direction of Superintendent Dean Myers.

Nicknamed "The Dungeon," the official name of the facility is "Billy Ellis Memorial Stadium," after a former principal who died of cancer.

[6] The 2016 season was Johnson's second title shot when the Knights advanced to the class 4A state finals only to be dispatched by St. Pius in a 3-0 loss.

[8] In 2022, Johnson captured its 2nd 5A title after a come-from-behind 4-2 win over St. Pius in the Class 5A state championship match.

Johnson went on to go undefeated the regular season and in the final a 4-2 win over Westminster sealed the Class 4A state championship.