Southwood was founded in 1962, and celebrated its 50th Anniversary in spring 2012. Although it has one of the lower student enrollments in the region, Southwood has proven itself over the years with its numerous Ontario scholars and high success rates from the literacy test. Southwood Secondary School’s culture is unique due to its student population being made up of students residing in an urban environment and a significant number of students from a rural environment. It is the only secondary school located in the west side of Galt-Cambridge to serve that community as well as the adjacent Township of North Dumfries.

Southwood is renowned for the calibre of its music and mathematics programs, well respected by universities and residents of the area. Beginning in the 2006-2007 school year, Southwood has hosted the region’s PAL program.

Southwood’s Athletics is also respected, having won several championships at the WCSSAA and CWOSSA levels in the last few years, notably in Volleyball, Basketball,Swimming and Cross Country. These teams have also participated at OFSAA. In 2007, the Sr. Boys Basketball Team won the AAA OFSAA championship.

In 2007, a group of students from Southwood were among a group of over 3500 students from across Canada who travelled to Vimy Ridge to commemorate the 90th anniversary of the battle and restoration of the memorial.