A lot of people are asking about i-Ready as a diagnostic or screening tool (rather than a learning tool).
There has only been 1 academic paper published on i-Ready’s diagnostic quality (in a Q3 journal). According to the authors:
“…when compared to the previous year’s end-of-year state test, i-Ready was generally not more successful, and sometimes worse, with lower accuracy…”
journals.sagepub.com/do…