School growth norms calculator

Document created by Community User on Jul 19, 2017
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School Growth Norms can be used to compare growth at your school to student growth at other schools.

The School Norms Calculator is an Excel file that enables users to compare their school's mean growth with the US population of schools whose students have started at about the same RIT level, have also tested at about the same time during the instructional year, and have re-tested after a similar amount of instructional time.

It is available for download here: 2015 School Norms Calculator. The User Guide is found on the second tab of the calculator.

The School Norms Calculator helps answer questions such as, “How does the growth of the students at our school compare to other schools across the country?” Users can compare their school's mean growth against a nationally representative sample of U.S. schools whose students have started at about the same RIT level, and took their MAP Growth assessments at roughly the same number of instructional weeks within the school year. NWEA growth norms are conditional, meaning that normative growth is conditioned upon a number of factors such as the number of weeks of instruction received by a student and their initial RIT score. For example, a student with a 12 weeks of instruction would be expected to show more improvement over time than a student with only four weeks of instruction. The school growth norms are conditional as well, and can be used to show that, for example, a school whose third graders produced an average fall math RIT score of 194.5 would place that school at the 76th percentile, relative to other U.S. schools. Furthermore, if those same third graders showed average growth between fall and spring of 12.5 RIT points, then that amount of growth would place the school at the 39th percentile, relative to other U.S. schools whose third graders had that same starting RIT score.

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