Lighting is one of the most critical physical characteristics of educational facilities because this contributes to a classroom's visual environment. A visual environment that is conducive to learning will help students participate in classroom activities more and integrate the concepts and theories being taught. Good lighting significantly contributes to the aesthetics and psychological character of the learning environment. This is because the visual environment affects the following aspects of the learning process:
- visual stimuli
- the student's mental attitude
- as a direct result of the above, the student's scholastic performance
- a student's attention span
- the student's and teacher's sense of time
Students who saw colors that they liked had influenced their muscular tension and motor control. Warm colors were associated with slight elevations in blood pressure of children while cooler colors tneded to cause slight drops in blood pressure. When colors and lighting are combined together to create educational facilities that are mentally stimulating, they can cause an increase in the following bodily functions:
- muscular tensions
- respiration rate
- heart action
- blood pressure
- brain activity