609 Southern Avenue (Upper Elementary) Sacred Heart Catholic School is a Roman Catholic parochial school in the historic district of downtown Hattiesburg, Mississippi where it is mostly surrounded by Victorian-era homes and other churches.

Sacred Heart Catholic High School was officially detached from the elementary school on June 8, 2010 when the Hattiesburg City Council voted to accept a bid of $2.5 million for the city-owned property formerly known as First Baptist Church.

[citation needed] Sacred Heart Catholic School was founded in 1900 by the Sisters of Mercy.

The Class of 1966 were the last to graduate from Sacred Heart when the high school closed due to low enrollment.

Groundbreaking for Sacred Heart Catholic School's new sports complex occurred in 2014.

The Parish and School were able to purchase the former Court Street United Methodist Church at 609 Southern Avenue, creating the upper elementary campus (5th-6th Grade), as well as the St. James Chapel and a new expanded Parish Life Center.