Southern Senior High School was a former secondary school in south Baltimore, Maryland, originally built in 1910 with an addition in 1926. Part of the Baltimore City Public School System, it was originally located on the southeast corner of Warren Avenue and William Street. The building was constructed of brick on a 2.45 acres (9,914.8 m²) site, containing an auditorium, three gymnasiums, a 500-person capacity cafeteria, library, six shops, six home education rooms, one laboratory, and 44 classrooms.

By 1955, the school had an enrollment of 1,800 students, necessitating further enlargement of the facilities. Then-Mayor Thomas D'Alesandro, Jr.

Thomas D'Alesandro, Jr.

Thomas J. D'Alesandro, Jr. was an American politician who was a U.S. Representative from Maryland's 3rd congressional district and subsequently the mayor of Baltimore, Maryland...

, broke ground on an expansion project designed to accommodate 600 additional students. This $2 million improvement completed in 1956 added eight more regular classrooms, a double classroom, five new art rooms, eight commercial classrooms for typing and business machines, three music rooms, a three shops for machine, print and auto mechanic instruction, allowing the school to thrive while the city continued to grow.

Construction of replacement building, 1976–1978

By 1976, when the school had again outgrown its capacity, Baltimore City Public School officials deemed it necessary to erect a new Southern Senior High School in the 1100 block of Covington St. Upon its completion in 1978, the building was capable of accommodating 2,400 students. The state provided $11.7 million for the project of the estimated total cost of $17 million.

Transition to Digital Harbor High School, 2002–2005

The Covington St. structure remains but the school changed names and academic focus in 2002, becoming the current Digital Harbor High School

Digital Harbor High School

Digital Harbor High School, formerly Southern High School, is a public, magnet high school located in Baltimore, Maryland. It is currently the only public information technology high school in Baltimore.-History:...

. The last class of Southern High School graduated in 2005.

Notable alumnus

The original Southern High School building was renovated and reopened in September, 1981 as a condominium and apartment complex. One of its most famous alumnus, Hall of Fame

National Baseball Hall of Fame and Museum

The National Baseball Hall of Fame and Museum is an American history museum and hall of fame, located at 25 Main Street in Cooperstown, New York, operated by private interests serving as the central point for the study of the history of baseball in the United States and beyond, the display of...

 baseball player Al Kaline

Al Kaline

Albert William "Al" Kaline is a former Major League Baseball right fielder. He is a member of the Baseball Hall of Fame. Kaline played his entire 22-year baseball career with the Detroit Tigers. Kaline still works for the Tigers as a front office official. Because of his lengthy career and...

, graduated from Southern High School in 1953 and began playing that summer as an 18-year old in the Major Leagues

Major League Baseball

Major League Baseball is the highest level of professional baseball in the United States and Canada, consisting of teams that play in the National League and the American League...

 for the Detroit Tigers

Detroit Tigers

The Detroit Tigers are a Major League Baseball team located in Detroit, Michigan. One of the American League's eight charter franchises, the club was founded in Detroit in as part of the Western League. The Tigers have won four World Series championships and have won the American League pennant...

.