Gardner–Edgerton USD 231 is a public unified school district headquartered in Gardner, Kansas, United States.

[1] The district includes the communities of Gardner, Edgerton, and nearby rural areas.

[7] Being located in the rapidly growing southern portion of Johnson County, USD 231 has had to manage the challenges of exploding enrollment numbers since the late 1990s.

A $29.7 million bond issue was passed in 2016 to construct an Advanced Technical Center, addition to the high school to address enrollment growth, a TRAILS facility for adults with disabilities, and capital improvements.

The Gardner-Edgerton Unified School District is currently under the leadership of Superintendent, Brian Huff.