Pay solution: Since teaching quality increases when classes are small and decreases when classes are large, we can adjust class sizes to equalize the quality d

Pay solution: Since teaching quality increases when classes are small and decreases when classes are large, we can adjust class sizes to equalize the quality delivered by each teacher. Having equalized the quality, we now simply pay teachers for the number of students they teach. A good teacher might deliver standardized quality to 90 students, while a bad teacher might deliver standardized quality to 5 students. The good teacher gets paid 18x as much as the bad teacher and the students all get standardized quality. The main difficulty here is physical classroom dimensions.