Research report

Equating words-correct-per-minute (WCPM) scores across passages of MAP Reading Fluency

March 2020

By: Mary Ann Simpson, Jing Chen


Description

NWEA equated words-correct-per-minute (WCPM) scores from oral reading passages included in the NWEA MAP Reading Fluency assessment. Equipercentile equating with loglinear presmoothing was applied to convert raw WCPM scores from a non-reference passage to those from a reference passage. The goals of this study were to (1) develop a method to choose a reference passage and passage pairs for equating WCPM scores from a large number of passages and (2) determine if equated WCPM scores provide a more accurate indication of students’ oral reading fluency ability compared to the raw WCPM scores from passages that vary in difficulty.

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