research is mixed about small class sizes (maybe 1 in 10 as you said, on 1 in 5, would be beneficial but there is very little difference between 1 in 20 and 1

research is mixed about small class sizes (maybe 1 in 10 as you said, on 1 in 5, would be beneficial but there is very little difference between 1 in 20 and 1 in 50). Not a rebuttal, just adding some info