The first - a second gymnasium and several new classrooms in an area later known as the "North" building - opened in 1956; additionally, Southwest became a 7-12 school that same year.

[5] Most of the students who attended West High School were transferred to Southwest when it was closed the same year.

[5] In 2006, a new equipment and weight lifting area was designed in the vocational end of the North building.

Over the next few years, the entire interior structure of the auditorium was removed starting with the concrete floor and ending with the new roof.

The stage and part of the original gym floor, now the orchestra pit, are all that remain of the previous structure.

School officials had known of the possibility of the fight breaking out beforehand and administrators had reached out to the students every hour prior to no avail.

[13] On March 14, 2018, exactly one month after the Stoneman Douglas High School shooting in Parkland, Florida, students at Southwest participated in a nationwide walkout to honor the victims of the shooting and protest gun violence.