The situation of class sizes decreasing? The article you gave is from 2021 so im guessing its just methodology of oecd vs nces? the closest citation to that claim is from a 2013 NCES source though.
The situation of class sizes decreasing? The article you gave is from 2021 so im guessing its just methodology of oecd vs nces? the closest citation to that claim is from a 2013 NCES source though.