Question: What activity is done by most teachers in the United States, but has almost no evidence of effectiveness in raising student test scores? Answer: Analyzing student assessment data. This ...

Learn about t-test assumption, including scale, sampling, normality, sample size, and variance equality, for accurate statistical analysis and reliable results.

Demand for more and better data for test is driving a major standards effort, paving the way for one of most significant changes in data formats in years. There is good reason for this shift. Data ...