Maybe you should stop. Let the system fail enough such that the pain that you're preventing will start to affect the people who can actually fix things. If you can't fix it, let the wheel squeak. You're not the parent or savior of those children, so don't allow your high levels of empathy and life choices to be exploited by bureacrats. They know exactly which buttons to push and how to manipulate the type of people teachers are.

Stop playing the game where you spend money to cover up incompetence or corruption. Don't be a reliable patsy. Some problems only get better if you force the ones responsible to fix it.

Use a classroom to audit their own supplies and needs, and see where money intended for education actually goes. The information should ask be public.