What Is a Good i-Ready Score?
A "good" i-Ready score depends on your child's grade and when they were tested. The national average — the 50th percentile — rises each testing window as students are expected to grow. Enter your child's score below for an instant, grade-and-season-specific answer.
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Subject
Test Season
National Median Scores by Grade
50th percentile (national average) · Winter testing window · 2025–2026
| Grade | Math | Reading |
|---|---|---|
| Kindergarten | 413 | 388 |
| 1st Grade | 445 | 419 |
| 2nd Grade | 482 | 449 |
| 3rd Grade | 517 | 480 |
| 4th Grade | 549 | 503 |
| 5th Grade | 572 | 523 |
| 6th Grade | 589 | 539 |
| 7th Grade | 604 | 554 |
| 8th Grade | 616 | 566 |
Based on publicly available Curriculum Associates national norms · Independent site, not affiliated with Curriculum Associates
What Each Percentile Level Means
90th percentile and above — Well Above Grade Level
Your child is performing in the top tier nationwide. Ask the teacher about enrichment or challenge work to keep the momentum.
75th–89th percentile — Above Grade Level
Strong performance. Your child is outperforming the majority of peers. Focus on maintaining steady growth toward the next testing window.
40th–74th percentile — On Grade Level
Your child is meeting grade-level expectations. Consistent practice and aiming for Typical growth between windows is the priority.
20th–39th percentile — Below Grade Level
Additional support can help. Ask the teacher which domain is pulling the score down — the overall score is only the starting point.
Below the 20th percentile — Well Below Grade Level
Ask for a domain-level breakdown and consider additional resources (intervention groups, tutoring, at-home practice at the right level).
Percentile ranges are approximate and vary by grade and season. See exact cutoff scores →
Common Questions Parents Ask
What does the 50th percentile mean on i-Ready?
The 50th percentile is the national average — your child scored higher than 50% of students in the same grade and testing season nationwide. It typically corresponds to "On Grade Level" placement.
Is 75th percentile good on i-Ready?
Yes. Scoring at the 75th percentile means your child performed better than 75% of peers nationwide, which places them in the "Above Grade Level" range. It reflects strong performance relative to grade expectations.
What i-Ready score is considered below grade level?
Placement cutoffs vary by grade and season, but in general, scores below the 25th percentile indicate "Below Grade Level." Use the calculator above to check the exact cutoff for your child's grade and testing window.
Can the same i-Ready score mean different things in Fall vs. Spring?
Yes. Expectations rise across the school year, so a score that places a student "On Grade Level" in Fall may fall below that threshold by Spring if they haven't grown. Always check the score in context of the season.
What is a good i-Ready score for 3rd grade?
For 3rd grade Math in the Winter testing window, the national median is approximately 517. For Reading, it is approximately 480. Scores above these numbers are considered on or above grade level for mid-year.
What should I do if my child scores below the national average?
Ask the teacher for a domain-level breakdown — the overall score is only the starting point. Identify the specific skills showing the most room to grow, then focus practice there. Consistent daily effort in the right area matters more than the total scale score.