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Changing "course": Reconceptualizing educational variables for massive open online courses

Journal Article

HarvardX and MITx: The first year of open online courses

Working Paper

HarvardX and MITx are collaborative institutional efforts between Harvard University and MIT to enhance campus-based education, advance educational research, and increase access to online learning opportunities worldwide. Over the year from the fall of...

Practical differences among aggregate-level conditional status metrics: From median student growth percentiles to value-added models

Journal Article

Descriptive statistics for modern test score distributions: Skewness, kurtosis, discreteness, and ceiling effects

Journal Article

The problem with “proficiency”: Limitations of statistics and policy under No Child Left Behind

Journal Article

Estimating trends from censored assessment data under No Child Left Behind

Journal Article

Estimating achievement gaps from test scores reported in ordinal "proficiency" categories

Journal Article

The dependence of growth-model results on proficiency cut scores

Journal Article

A nonparametric framework for comparing trends and gaps across tests

Journal Article

Discrepancies between score trends from NAEP and state tests: A scale-invariant perspective

Journal Article

Supporting growth interpretations using through-course assessments

Journal Article

Final report on the evaluation of the Growth Model Pilot Project

Journal Article