Small numbers of students tested in several MassInsight award - winning schools suggest that MCAS score gains may reflect little more than variations in the testing pool. (fairtest.org)
DPI said comparisons are «unreliable,» though, because of the small number of students tested in the statewide voucher program. (host.madison.com)
And there's the difficulty of drawing the right conclusions about teacher performance from very small numbers of student test scores, an especially tough challenge in elementary schools, where teachers typically work with a single classroom of students every day. (ascd.org)