My heart is with you, 100%. I know of your situation, as I taught for 34 years in a city public school district. I never had any delusions that it was an easy job. It was not easy, but it was tremendously rewarding.
I never complained about the work that it took, including the work that parents, students, and administrators never see: the work that we do when we leave school and go home.
I never complained about the money that I had to pay out of my own pocket because the school's budget fell short. Or gaming the book club system, converting the points received from the parents who could afford to buy books, so that I could obtain bonus books for the classroom library or to give to the kids whose parents could not afford to buy them.
During 34 years, it was the same story: cut the budget, cut the budget, cut to the bone, and then cut the bone.
I never went into it for the money. I never went into it for the glory or accolades. I was in it and I stayed in it because it made me feel like I was making a difference in the world. I did the best I could do, and I had tremendous satisfaction for doing what I could do.
Do what you need to do so you can hold your head up high, look at yourself in the mirror, and see a respectable person who did your best.
Love, hugs, respect to you.