greenschools is a non-profit organization that works to create healthier school environments by addressing issues like indoor air quality, nutrition, and reducing/reusing/recycling. It offers educational programs for staff and students like training, assemblies, and fundraising. Greening schools is important because the environment significantly impacts health issues in children like asthma and more than a third of childhood diseases are caused by environmental exposures. Most time is spent indoors, so unhealthy school practices can harm those with medical conditions.