In 2009, the school district was rated "academically recognized" by the Texas Education Agency.
[1] The school district's name comes from Calvin Joseph ("Cal") Allen (1859–1922), a prominent early rancher.
Allen owned a 4,000-acre (16 km2) cattle ranch on which the school district is now located.
Students in Middle School (Grades 6–8) must wear ID badges around their neck.
In July 2024, the ACLU of Texas sent CISD a letter, alleging that the district's 2023-2024 dress and grooming code appeared to violate the Creating a Respectful and Open World for Natural Hair (or CROWN) Act, a Texas law which prohibits racial discrimination based on hairstyles or hair texture, and asking the district to revise its policies for the 2024-2025 school year.