Taxes and School

We pay enough taxes already for everything we do including the school district..We already help supply the classrooms with basic stuff that they need for the school year...Why in Arizona do we need to pay for summer school if the school is asking for the child to take a certain class just to pass? Alot of other schools around the United Stated do not charge for summer school and yet we do...
My daughter needed to retake a math class so she can go to the 8th grade..I had to pay $200 for her take the one class just for math only-just for the month of June! I couldn`t pay the whole thing, my mother in law helped us out with some of the money for summer school..
Alot of other schools throughout the U.S. don`t have the parents pay a dime to do anything or go to summer school...Arizona is screwed up in the school department when it comes to our kids future and alot of can`t afford alot of stuff the school is asking us to pay for..