The school is named for the late Philip M. Hannan, Archbishop of New Orleans from 1965 to 1989.
The Old Campus (St. Bernard Parish Campus)
The old Hannan campus, located at 2501 Archbishop Philip M. Hannan Boulevard in Meraux, was destroyed by Hurricane Katrina in 2005. The campus was situated on Archbishop Philip M. Hannan Boulevard, between East Judge Perez Drive and St. Bernard Highway. The school was completely air-conditioned and included Our Lady of Peace Chapel, separate boys' and girls' athletic facilities (including a baseball stadium, softball field, and lighted football stadium), a large library and media center, a science wing, networked computer laboratories, a state-of-the-art foreign language lab, and a Fine Arts Complex that included a 200-seat auditorium, band room, art studio, and journalism lab.
Before its destruction the old campus was in its seventeenth year in operation as the only Catholic high school in St. Bernard Parish.
Immediately after Hurricane Katrina, Saint Joseph Abbey housed the school on a temporary basis.[5]
Athletics
Archbishop Hannan athletics competes in the LHSAA.
The first permanent post-Katrina American football field for the school opened in 2013. Prior to that point, the American football team traveled between practice sites.[5]
Hannan sports teams:
Football
Boys' basketball
Girls' basketball
Track
Cross country
Baseball
Softball
Bowling
Golf
Girls' soccer
Volleyball
Wrestling
Championships
Boys' Basketball State Championship: 2022
Bowling State Championship: 2005 (undefeated state champions in 2005, the first year bowling was considered a state sport)