Area of classroom space per student during the reporting period.
Organizations should footnote all assumptions used.
This metric is intended to capture the amount of classroom space the organization provides each student. Organizations are encouraged to align with state and international standards. For example, the New York State Department of Health Bureau of Emergency Medical Services published “Classroom Design Standards” that detail the required floor area per student, categorized by the classroom setup style.
June 2025 - IRIS+ v5.3b Released (current version)
No change.
December 2024 - IRIS+ v5.3a Released
No change.
June 2022 - IRIS+ v5.3 Released
Immaterial change. Minor revision to usage guidance for clarity.
May 2021 - IRIS+ v5.2 Released
No change.
January 2020 - IRIS+ v5.1 Released
No change.
May 2019 - IRIS+ v5.0 Released
No change.
March 2016 - IRIS+ v4.0 Released
No change.
March 2014 - IRIS+ v3.0 Released
Immaterial change. Minor revision to metric name and definition language for clarity.
November 2011 - IRIS+ v2.2 Released
No change.
February 2011 - IRIS+ v2.1 Released
No change.
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.
September 2009 - IRIS+ v1.0 Released
New metric. Students to Classroom Square Foot Ratio (ED16) was developed via the Original IRIS Working Group.
IRIS Metrics Work Better in Sets
To use IRIS metrics—and the resulting data—to understand impact performance, IRIS metrics should be used and analyzed in generally accepted sets and according to well-defined objectives. IRIS+ gives you access to generally accepted Core Metrics Sets aligned to common Impact Themes and Sustainable Development Goals (SDGs).