Green schools enhance learning.

The quality of educators and curriculum are the most important factors in a student’s scholastic performance, but the quality of school facilities – where students learn – is often overlooked. School buildings can enhance a student’s ability to learn by keeping them healthy, attentive and present.

Indoor Air Quality

Students in America miss approximately 14 million school days per year because of asthma (according to the U.S. Centers for Disease Control and Prevention). That number is for one country alone - imagine the magnitude of this in countries around the world!

Controlling exposure to indoor environmental factors, such as carbon monoxide, dust, and pollen, could prevent more than 65 percent of asthma cases among elementary school-age children, reports the American Journal of Respiratory and Critical Care Medicine. With public schools relying on average daily attendance rates to receive federal funding, improved attendance is of particular importance.

According to the Department of Education, more than 20 percent of public schools in the U.S. report having unsatisfactory indoor air quality. Carnegie Mellon University has shown in studies that there is an average overall health improvement rate of 41 percent due to improved indoor air quality. By improving indoor air quality, green schools can improve the health of students, faculty and staff, potentially decreasing sick days.

According to researchers at Lawrence Berkeley National Laboratories, when ventilation rates are at or below minimum standards, an associated decrease of 5-10% occurs in certain aspects of student performance tests (LBNL IAQ Resource Bank)


Optimizing classroom acoustics so children can hear is a primary foundation for learning. Many studies confirm the importance of low background noise level and speech intelligibility in maintaining appropriate acoustic conditions for student learning (Berg et al., 1996; Crandall & Smaldino, 1995; Knecht et al., 2002). A green school features acoustical ceiling tiles, lined ductwork and HVAC systems with appropriately placed vents, and therefore provides an environment that lessens distractions and encourages participation.

Thermal Comfort

Comfortable indoor temperatures enhance productivity and keep students more alert. Fresher, cleaner air can be achieved with windows that open or ventilation systems that provide a constant supply of air.


When deprived of natural light, studies have shown that children’s melatonin cycles are disrupted, likely having an impact on their alertness during school (Figueiro & Rea, 2010). Skylights and large windows allow daylight to stream in, reducing energy costs and improving student concentration.

Experiential Learning

Teachers at green schools can use the building as the basis for project-based, experiential learning. Green schools provide a clear opportunity to connect students with curricula in environmental and science technology engineering and mathematics (STEM) education, and can serve as a tool for interactive lessons across all subjects. For example, math students can track and chart utility cost savings, science students can analyze and compare the difference between eco-friendly and traditional cleaning products, and humanities students can debate the impacts communities have on their environments. Every student can benefit from the opportunity for hands-on learning, and demonstrate the interconnectedness of the built environment and natural systems.

"I think that we should begin in elementary schools teaching people about sustainability… we know that children’s instincts always direct them to be more green… We should give every young person the means to maximize the environment of their schools. They’re all in school somewhere—public or private. We should be right now engaged in retrofitting every school in America."
President Bill Clinton