About iReadyScores.com
Last updated: May 2026
What This Site Does
iReadyScores.com is a free, independent reference tool designed to help parents and teachers quickly understand i-Ready Diagnostic score reports. The site provides:
- An interactive score calculator that converts any scale score to a national percentile rank
- Complete percentile tables for every grade (K–8), subject (Math and Reading), and testing season (Fall, Winter, Spring)
- Plain-language explanations of placement levels and what they mean in practice
- Grade-specific guidance for supporting students who are below, on, or above grade level
Data Sources
All score and percentile data on this site is derived from the national norms published annually by Curriculum Associates, LLC — the company that publishes the i-Ready program. Curriculum Associates makes these norms publicly available in their annual Diagnostic National Norms documents.
We update our data each school year when Curriculum Associates releases new norms. The data currently displayed reflects the 2025–2026 school year norms. Each page is labeled with the school year to which the data applies.
Important Disclaimer
iReadyScores.com is not affiliated with, endorsed by, or associated with Curriculum Associates, LLC or the i-Ready® program in any way. i-Ready® is a registered trademark of Curriculum Associates, LLC. We are an independent reference site that organizes publicly available data to make it easier for families to understand.
The percentile and placement information on this site is intended for general reference only. Official scores should always be reviewed through your school's i-Ready student report, and any decisions about instruction or intervention should be made in consultation with your child's teacher.
Who Built This
iReadyScores.com was built by an independent developer with a background in educational data and a personal interest in helping families navigate standardized assessment results without needing to decode dense technical documents.
If you notice an error in the data, have a question, or would like to suggest a feature, please review our methodology page and email hello@ireadyscores.com.