Southwest Independent School District is a public school district located in southwestern Bexar County, Texas, United States.
The district covers a area that includes portions of the city of San Antonio and Von Ormy.
In 2009, the school district was rated "academically acceptable" by the Texas Education Agency.
In 2023 its enrollment was around 13,000. At that time the district's population was increasing, prompting it to open more schools.
In 2018 a program for aeronautical sciences for all grade levels debuted.
All four of SWISD's middle schools are named for astronauts aboard the Space Shuttle Challenger when it disintegrated after takeoff.