I need to clarify something for the folks crying foul about money.
Some of the bands at the top are keeping their equipment together with zipties, duct tape, and a handful of parents who aren't afraid to cobble solutions together with a bit of welding or creative application of fasteners.
Furthermore, 2 of the 3 LISD (north) schools -- maybe all 3 -- have a STUNNING number of kids on free/reduced lunch. Think 25%+.
While money certainly helps, money is NOT buying these results. Money pays show designers, arrangers, field techs, lesson teachers, etc. It also buys props materials, extra uniform pieces, and other items which can contribute to Visual scores. But getting kids to practice and grind and sweat and shine under the pressure and the lights...money does NOTHING for any of that.
Thus, money is simply NOT the answer you might imagine.
Booster Clubs exist because the school is the school. Everything the school doesn't fund (they fund very little outside of instruments and UIL contest costs) is funded by donations, fundraising, and fees. All 3 of those things funnel through the Booster Club. The school owns assets and the Booster Club owns assets. Where that line is drawn can vary a bit.
The school band program is an entity of the school and thus occupies a very particular legal territory. The band's Booster Club is a nonprofit structured a very particular way which is quite different from the public school component that is the band.
If you want to understand this better, feel free to DM me.