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Mathematical Sciences-Student Talk-Sophie Litschwartz (Harvard Graduate School of Education)- "Test Scores: An Interactive Simulation"

Monday, December 16, 2019
2:00 pm


Floor/Room #: 

Speaker: Sophie Litschwartz (Harvard Graduate School of Education)

Title: Test Scores: An Interactive Simulation

Abstract: Tests are a ubiquitous part of education. However, there is widespread confusion about testing and suspicion around whether test scores tell us anything of value. In this talk, I demystify test scores through an interactive testing simulation. I show that tests are a tool for measuring knowledge, just as rulers are a tool for measuring height and scales are a tool for measuring weight. I demonstrate that tests are imperfect measurement tools that contain error. I explain where error in the test scores comes from, how error affects the interpretation of test score distributions, and how testing error can be reduced.