How well do weekly math assessments match up to standardized tests?

The Measurements

Comparison of MAP scores and IXL Diagnostics for 2nd and 3rd grade students (n=24) at two of our participating elementary schools.
Comparison of SBA scores and IXL Diagnostics for 4th and 5th grade students (n=30) at two of our participating elementary schools. The two data points with asterisks (*) are discussed below.
Comparison of MAP and SBA scores for 39,582 students in grades 3–8. Reproduced from “Linking the Smarter Balanced Assessments to NWEA MAP Assessments”, NWEA. The full text can be accessed here.
Pearson’s correlation coefficient (r) between the three different assessments. The coefficients for the IXL comparisons were calculated using the Thorndike formula to account for restriction of range: the fact that our data covers a smaller span of values than the larger MAP-SBA dataset.

Wrap Up

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PhD in Applied Physics from Stanford. Data scientist and entrepreneur. Working on eliminating education gaps in elementary school math.

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Mike Preiner

Mike Preiner

PhD in Applied Physics from Stanford. Data scientist and entrepreneur. Working on eliminating education gaps in elementary school math.

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