Guides
Schools already collect more assessment data than anyone has time to read. These are plain-language explainers of what those numbers mean, written for the teacher or family member who has one in front of them right now. Every factual claim is sourced to the vendor's own documentation and cited on the page.
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What an IXL SmartScore actually means
A SmartScore is IXL's 0-100 reading of one skill, not the percentage of questions answered correctly. IXL calls 80 proficiency, 90 excellence and 100 mastery.
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What a NWEA MAP RIT score means
RIT is the scale NWEA MAP Growth reports on, and it means the same thing at every grade. That is why the percentile, not the RIT, says whether a score is on track.
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What the IXL Diagnostic measures
IXL sells two diagnostics, and the one your school runs changes the scale. The score is a grade-level placement, not a SmartScore, and a benchmark IS a diagnostic.
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What a Lexile measure means
A Lexile puts a reader and a text on one scale, so the two can be matched. It is not a grade level, and the usable figure is the band around it, not the number.