Why is Royal "Brookshire Royal"?

Since the news and sports new industrys' terminology follows the UIL's naming conventions, it will always be known as "Brookshire Royal."
The same goes for Wallis Brazos and even Omaha Paul Pewitt ISDs.
Look, for example, at the Katy schools: Katy, Katy Taylor, Katy Mayde Creek, Katy Cinco Ranch.
The State of Texas - through the UIL - calls the schools by the city they originally got their official mail through. In Royal's case, that was Brookshire. Regardless of the fact that Royal High School is actually in Pattison nowadays.
Don't worry, folks in Pattison are not alone. Everyone in Orchard is upset over Brazos being called Wallis Brazos too.