Don't worry, only rich communities' public school were/ are like that in Texas. Schools are funded at the district-level in Texas, so poor communities go to poor schools and wealthy kids go to wealthy schools. If districts get so big that they encompass both, sometimes the wealthy residents try to stage a coup and split the district into wealthy and poor.

Sauce for my claims: https://www.ntdaily.com/opinion/keller-isd-considers-splitting-up-into-two-separate-districts-reveals-systematic-faults-in-public-educational/article_3dcab174-debb-11ef-bb51-5b9a84aaf7fb.html