Sentences with phrase «scientifically valid estimate»
The long term trend test of the National Assessment of Educational Progress (LTT NAEP) is the longest running test of student achievement that provides a scientifically valid estimate of what American students have learned.
http://educationnext.org/ Not exact matches
They challenge this on rather solid empirical grounds and with physical arguments and data analysis that is every bit as scientifically valid as that used to support larger estimates, often obtaining numbers that are in better agreement with observation.