Gregory J. Cizek

Professor of Educational Measurement and Evaluation · UNC at Chapel Hill

Professor Cizek is an internationally recognized expert on educational assessment.

Academic Standards Assessment Grade Inflation Common Core Standards Test Validity

David Weintraub

Professor of Astronomy; Director of Undergraduate Studies; Director of Program in Communication of Science & Technology · Vanderbilt University

Expert in astrophysics who also writes about extraterrestrial life, human space travel and space colonization.

Space colonization Extraterrestrial life Mars colonization Mars Space travel

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