Smithville Independent School District (Smithville ISD) is a public school district located in Smithville, Texas, serving over 1,800 students across a 281-square-mile area. The district comprises four main campuses:

Brown Primary School: Pre-Kindergarten and Kindergarten
Smithville Elementary School: Grades 1–5
Smithville Junior High School: Grades 6–8
Smithville High School: Grades 9–12
Additionally, Smithville ISD offers a nontraditional online high school extension, Tiger Academy, and an after-school program for elementary students through the ACE Program. The district is dedicated to excellence, providing a comprehensive education that prepares students for success in an ever-changing world.