Monday, October 8, 2018

Educators Benefit from ATI's Research and New IRT Item Parameters

Did you know that each year ATI refreshes and maintains stable estimated parameters for items in the ATI Secure and Community Item Banks based on tens of thousands of students? ATI uses item parameters to help build reliable, valid district/charter-wide assessments, and to evaluate item performance to guide item bank revisions.

Test Builder powerful tools support the creation of reliable and valid assessments.

You might ask why yearly refreshment matters. It matters because the quality of item parameter estimates has a direct effect on the quality of the test therefore on the quality of the data from the tests. ATI uses item parameters to build reliable, valid district/charter-wide assessments and to evaluate item performance to guide item bank revisions. Quality of item parameter estimates also impact the accuracy of student ability estimates. Accurate student ability estimates provide the ability to compare performance on a variety of assessments covering the same or different content areas and to measure academic progress across time. 

Galileo puts the power of Item Response Theory (IRT) in the hands of educators. Educators have always been able to view item parameters for district/charter-wide assessments in the Test Review interface and in the Item Parameters Report

Now, educators can also view item parameters along with other metadata in Test Builder and in drill downs from many Galileo reports such as Test Monitoring, Intervention Alert, Item Analysis, and Detailed Benchmark Performance Levels.

Check out these new features to take advantage of valuable IRT parameter information as you are creating tests and evaluating student performance to guide instruction! Learn more by accessing a short video on “What Role Does IRT Play in Assessments?” Contact a Field Services Coordinator to learn more.

Other resources:
Make a Measurable Difference with ATI and IRT Research
What Makes the ATI Item Banks the Preferred Choice by So Many Educators?
Experience the Ways the Galileo Comprehensive Assessment System Promotes Student Learning — Complimentary Trial Available

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