In 1994 a new library, front office, science wing and cafeteria were added during a major facelift of the school.

During a 2004 construction the Arthur C. Lilly Center, the Johnnie Rountree Performing Arts Center and the new field house at Dement Field were all constructed and the entire school was given a facelift which included new dining areas and renovations in all three gymnasiums.

From 1942-1945 Harold Dement was the acting principal while Mr. Slocomb served in the armed forces during World War II.

During the 2004 construction the Arthur C. Lilly Center, the Johnnie Rountree Fine Arts Center and the new field house at Dement Field were all constructed and the entire school was given a facelift which included new dining areas and renovations in all three gymnasiums.

The following programs are offered at GPHS: Choir Galena Park High School Campus