The fact is that the same performance could probably be done with less money per student. Pick any dollar amount and get the same range of possible results. There is no relationship between student teacher ratio and performance. They say more teachers assure better student performance. Chart 4 shows no relationship between salaries and student performance.
Teachers deserve a comfortable standard of living.
Increased pay will not, however, yield higher quality education for their pupils. Chart 5 shows no relationship between the percentage of teachers with Master's degrees and student performance. We pay a premium for teachers with Master's degrees. There are no relationships, no cause effect, nothing to base their calculation for the cost of funding an adequate education. We will spend billions of extra dollars expecting an improvement in academic quality but nothing will change.