March 2016 - IRIS v4.0 Released (current version)
Material change. Metric definition language and reporting format modified to maintain consistency with changes to IRIS structure.
March 2014 - IRIS v3.0 Released
Immaterial change. Minor revision to definition language for clarity.
November 2011 - IRIS v2.2 Released
February 2011 - IRIS v2.1 Released
September 2010 - IRIS v2.0 Released
New metric. Parent/Community-Teacher Engagement (PD1392) developed via IRIS Taxonomy Development Group.