A score report arrives with a graph, a percentile, and a color-coded recommendation. It can look precise while leaving the most useful question unanswered: what should change for my child tomorrow?
MAP Growth, i-Ready, and Renaissance Star help schools understand academic performance and plan instruction. They are used across the country, but they are not a single national exam that every child takes. A school chooses its assessment system, testing schedule, and uses for the results.
NWEA MAP Growth: achievement and growth
MAP Growth is computer-adaptive: the difficulty of the questions responds to the student’s answers. Its RIT scale helps describe achievement in a subject and track change over time. An achievement percentile compares performance with a reference group; a growth percentile answers a different question about progress. Check which one you are reading.
A difficult question is not necessarily a sign that a child is failing. An adaptive assessment needs to explore the edge of what the student can do. Ask the teacher to connect the overall result and skill information to work the child can actually demonstrate.
i-Ready Diagnostic is now i-Ready Inform
Curriculum Associates now calls its adaptive assessment i-Ready Inform; many families and older reports still use i-Ready Diagnostic. Reports can help teachers identify strengths and instructional needs in reading or mathematics. Ask which version, language, subject, and testing window produced your report.
A placement label is not a complete description of a learner. A child can perform differently across reading skills or across mathematical domains. Ask which specific skills need teaching rather than treating the broad label as a prescription to repeat an entire year.
Renaissance Star is a family of assessments
Star Reading, Star Math, and Star Early Literacy serve different purposes and learners. The wider Star suite includes computer-adaptive assessments and curriculum-based measures. Ask for the full test name rather than assuming that every result labeled “Star” is the same assessment.
Scores can support screening, instructional planning, and monitoring. A screening concern should lead to a closer look at the relevant skills, not a conclusion about the child’s intelligence or a diagnosis based on one result.
Read the report in the right order
- Identify the exact assessment, subject, date, and comparison group.
- Separate current achievement from growth over time.
- Ask whether testing behavior or access needs affected the result.
- Look at specific skills alongside classroom work and prior results.
- Agree on a teaching adjustment and when its effect will be reviewed.
A percentile is not the percentage of questions answered correctly. Nor should numbers from different publishers be placed on one homemade scale. A RIT score, an i-Ready scale score, and a Star scaled score belong to their own systems.
When a child is working ahead
A high score is a reason to examine readiness, not simply assign more work. Ask what the child has already mastered, what the next learning goals are, and whether enrichment, reduced repetition, or carefully chosen acceleration would help. A reading score also does not determine emotional readiness for every book.
Ask this at the next meeting
“Which result changes what you will teach, and what will that look like during the school day?”
Sources & further reading
Publisher and developer information checked November 2, 2026. Names, editions, and report formats can change.