[3] Since it opened, there have been a significant number of renovations and expansions to the campus to both expand capacity and improve arts and athletics facilities.

In 1987, some arts facilities were added including drama and chorus classrooms, and an auditorium that also functioned as an additional gymnasium.

[6] The project was completed in March 2019 and added additional parking and improve both vehicular and pedestrian circulation around the campus.

[18] The choir won the Grand Championships in Atlanta in 2003 and first place at the National Choral Festival in Gatlinburg, Tennessee.

[19] The Brentwood High School Orchestra includes violin, viola, cello, and double bass players.

In spring 2001, Mark Madison and the television production classes began operating the channel and developed a full-time station with coverage for the entire northern half of Williamson County.

[27] WBHS-9 has won numerous state, regional, and national awards in various film festivals and other video competitions around the country.

Additionally, WBHS-9 was tasked with installing in-house, closed-circuit television stations at five Williamson County elementary schools for morning announcements and other internal broadcasts.

[27] Ronnie Adcock took charge of the program in the fall of 2008 after Madison's death that spring and continues to operate the channel with almost six hours each day of news, announcements, sports, arts, and other school events.