To some extent, computer-aided learning might help reduce student/teacher ratios in practice. 2 hrs independent learning to 1hr in groups 1/3 the size... for ex

To some extent, computer-aided learning might help reduce student/teacher ratios in practice. 2 hrs independent learning to 1hr in groups 1/3 the size... for example. While I agree that more teachers per student is highly effective, it's also expensive... and will unavoidably end up becoming cost-limited below the ideal level. As a total side note, I wonder what other, potentially healthy changes can be made if personalized learning can be made to work well. For example, I suspect that homogeneous age classes are not ideal. Spending half your life in a room with 40 other 10 year olds isn't something that happens outside of modern school systems. It's somewhat unatural. Maybe mixed-age classes can become possible again.