High Quality Content by WIKIPEDIA articles! Rule Independent School District is a public school district based in Rule, Texas (USA). Located in Haskell County, a small portion of the district extends into Stonewall County. Rule ISD has one school that serves students in grades pre-kindergarten through twelve. The Rule ISD school mascot is the Bobcat. Stonewall County is a county located in the U.S. state of Texas. In 2000, its population was 1,693. Its county seat is Aspermont. The county is named for Stonewall Jackson, a general of the Confederate States Army.