The non visual effects of natural light on student performance
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The Non-Visual Effects of Natural Light on Student Performance Alberta Light & Color Study (81-85) Alberta Light Study (86-89) PG&E Daylighting Initiative (1999) Studies reported by NEA Alberta Light & Color Study (81-85) 3 School Study Sites 1. Color & Light School 2. Light School

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Alberta light color study 81 85 3 school study sites l.jpg
Alberta Light & Color Study (81-85) Performance3 School Study Sites

  • 1. Color & Light School

  • 2. Light School

  • 3. Control School


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Alberta Light and Color Study PerformanceSignificant Findings


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Albert Light Study (86-89) PerformanceFive School Sites

  • Site 1: Sodium vapor light

  • Site 2: Full spectrum fluorescent , no UV enhancement

  • Site 3 & 5: Full spectrum fluorescent light, with UV enhancement

  • Site 4: Cool white fluorescent


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Alberta Light Study PerformanceSignificant Findings


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PG&E Daylighting Initiative (‘99) Performance

  • Correlation between productivity and natural lighting in classrooms

  • Three school sites selected

  • Natural light provided by skylighting and windows

  • Compared students in classrooms with most daylight to those with least daylight


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Seattle Performance

  • Classrooms with largest window area had 9% to 15% higher grades

  • Skylit classrooms had 6% to 7% higher grades


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Fort Collins Performance

  • There was a 7% improvement in test scores in classrooms with the mostdaylighting

  • 14% to 18% improvement for students in classes with largest window space


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John Ott; 1973 Performance(Light as a vital nutrient)

  • Full spectrum fluorescent light in two first grade classes

  • Standard cool white tubes in two other identical first grade classes

  • Used hidden photography to observe classroom activity


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What Ott Found Performance Full spectrum fluorescent lights positively impacted:

  • Behavior

  • Performance

  • Academic achievement


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Dimininished: Performance

  • Disciplinary referrals

  • Absenteeism

  • Hyperactivity



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