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Lewiston presents NWEA growth gains; officials caution against treating one‑year changes as a trend
Summary
District data staff told the school committee the percentage of students scoring above the 50th percentile on NWEA MAP growth increased this year for math and reading — the highest level since 2016–17 — but administrators and a public commenter urged pairing growth with achievement measures and noted state participation requirements.
During agenda item 8 on Sept. 8, district data staff presented NWEA MAP growth results that showed an increase in the share of students exceeding national median growth percentiles, while school and committee members discussed the limits of a single‑year change and the difference between growth and achievement measures.
Steve (district data lead) said the district saw its highest percentage since 2016–17 of students scoring above the 50th percentile on NWEA growth measures: about 45% in math and a similar rise in reading. He cautioned that the finding represents one year of data and that the district needs…
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