Studies have shown that there is very little correlation between per-pupil spending and student achievement. There are some exceptions, like a computer training center should have computers, but kids in a one-room schoolhouse with an underpaid teacher can learn as well as kids in a multimillion dollar school with the highest paid teachers in the state.
One of the keys to learning success is the involvement and attitudes of the parents toward education. If the parent is telling the student that education is meaningless and is unwilling to help them with their homework, it's going to be a lot tougher on the student.