Das, Jishnu (contributor); Zajonc, Tristan (contributor) - 2008
mathematical knowledge.” Children enrolled in secondary schools in these two
Indian states are 3.1 (OECD) standard-deviations below …
parameters. The primary methodological difficulty arises because “knowledge” or “achievement”
is inferred from the data rather … than directly observed. Since individual knowledge is measured
3
with error, the variance of the achievement distribution …