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June 2022 - IRIS v5.3 Released (current version)
Immaterial change. Minor revision to usage guidance for clarity.
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January 2020 - IRIS v5.1 Released
No change.
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May 2019 - IRIS v5.0 Released
No change.
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March 2016 - IRIS v4.0 Released
No change.
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March 2014 - IRIS v3.0 Released
Immaterial change. Minor revision to metric name and definition language for clarity.
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November 2011 - IRIS v2.2 Released
No change.
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February 2011 - IRIS v2.1 Released
No change.
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September 2010 - IRIS v2.0 Released
Immaterial change. Classroom Square Feet per Student (PI5380) replaced Students to Classroom Square Foot Ratio (ED16). IRIS ID changed due to framework upgrade. Minor revision to definition language for clarity.
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September 2009 - IRIS v1.0 Released
New metric. Students to Classroom Square Foot Ratio (ED16) was developed via the Original IRIS Working Group.