Medina Valley Independent School District

Medina Valley Independent School District is a public school district based in Castroville, Texas.

In addition to Lacoste, the district also serves the city of Castroville and the surrounding area. Located in Medina County, a small portion of the district extends into Bexar County.

In 2022, the school district was rated "A" by the Texas Education Agency.

Schools
High School (Grades 9–12) Middle Schools (Grades 6–8) Elementary Schools (Grades PK-5)
 * Medina Valley High School
 * MVISD High School #2 (Opening in the 2026–2027 school year)
 * Medina Valley Middle School
 * Loma Alta Middle School
 * Castroville Elementary
 * Lacoste Elementary
 * Potranco Elementary
 * Luckey Ranch Elementary
 * Ladera Elementary
 * Silos Elementary (Opening in 2024–2025 school year)