Healthy indoor air supports healthier students, staff and learning environments. The Clean Air School Challenge (CASC) is a free program that helps K-12 schools nationwide take practical steps to improve indoor air quality and energy management through training, technical assistance, resources and funding opportunities.
How the Clean Air School Challenge Helps
The Clean Air School Challenge (CASC) can support schools in creating healthier learning environments. CASC is an engagement, recognition, training and technical assistance program that will empower K-12 schools across the country to address indoor air quality.
Through CASC, schools can:
- Foster awareness about indoor air quality
- Provide education about indoor air pollution risks
- Offer resources and solutions.
- Guide schools in developing and maintaining a comprehensive Energy Efficient IAQ Management Plan
- Build capacity for schools to manage and implement those Plans.
Having a Plan can lead to improved health for students, teachers and staff, an increased capacity for learning and savings in long term operations/facility costs.
The goal of CASC is to increase the number of K-12 schools who have adopted an Energy Efficient IAQ Management Plan, and our team will help schools get there.
If you are ready to get started, sign up your school.
How It Works
Step 1: Sign Up
Ensure you have support from others at your school. Sign your school up in the CASC school portal.
Step 2: Access Training & Support
Receive 1:1 technical assistance, access recorded trainings, and find educational resources.
Step 3: Assess Your School IAQ
Conduct a facility walkthrough to understand the current conditions of the school building
Step 4: Build & Maintain Your IAQ Plan
Develop a comprehensive Energy Efficient IAQ Management Plan with ongoing support.
Why Indoor Air Quality Matters in Schools
Schools across the country are tasked with providing a safe, healthy and educational learning environment. Indoor air quality (IAQ) can have a direct impact on health, productivity and learning. Poor indoor air quality can lead to:
- Increased student and staff absences
- Asthma episodes
- Respiratory infections
- Allergic responses
- Adverse reactions to chemicals used in schools
See CASC in Action
Explore the Clean Air School Challenge through these brief program videos.
Clean Air School Challenge Overview
Get an introduction to school indoor air quality and how CASC supports schools as they assess, plan and act to improve indoor air quality and energy management.
Meet the CASC Team
Meet the team and get a brief introduction to the Clean Air School Challenge. Learn about the benefits of participation, mini-grant eligibility and technical assistance.
Frequently Asked Questions:
Build Indoor Air Quality Awareness in Your Community
Regardless of your role in a school or community, you can help educate others on the importance of clean air in schools. One in six people in the US attend or work in a school which means school IAQ likely impacts you or someone you know. Help share the information about this opportunity and encourage schools to join CASC.
Use these toolkits for resources and ready-to-use materials to help guide conversations with school leaders.
This project has been funded in its entirety by the United States Environmental Protection Agency under assistance agreement #84098901 (CFDA 66.034) to the American Lung Association. The contents of this document do not necessarily reflect the views and policies of the Environmental Protection Agency, nor does the EPA endorse trade names or recommend the use of commercial products mentioned in this document.
Page last updated: September 29, 2026
