Resources
Clean Air Allies produces concise, evidence-based resources for anyone working to understand, advocate for, or take action on healthy indoor air in PK–12 (Prekindergarten through Grade 12) schools.
We take a holistic view of school indoor air quality (IAQ) and are regularly expanding our library to address new topics. To be notified when new resources are released, please subscribe to our newsletter.
Fact Sheets
Why Care about School Indoor Air?
A concise introduction to indoor air quality (IAQ), why it matters in schools, and what they can do to improve it — covering everyday ventilation, filtration, and temperature control, as well as resilience against extreme heat, wildfire smoke, and infectious diseases. Includes a list of resources from the EPA, CDC, and more.
Published: August 2025
CO vs. CO2
Carbon monoxide (CO) and carbon dioxide (CO2) are both colorless, odorless gases relevant to indoor air quality. Though commonly confused, they present very different concerns and require very different responses. This fact sheet clarifies these differences and explains why they matter for keeping schools safe and healthy.
Published: November 2025
Resource Summaries
The CDC’s Guidance for Preventing Infections in K-12 Schools
In 2024, the CDC issued guidance for preventing the spread of infections in K–12 schools — including everyday steps to take for cleaner air. This resource summary synthesizes that guidance to help school leaders, staff, families, and community partners understand what the CDC recommends and why it matters.
Published: December 2025
School IAQ Briefs
Measles in Schools: Indoor Air Quality as a Risk-Reduction Tool
Cleaner air is an important, though often overlooked, tool schools can use as part of a comprehensive strategy to prevent the spread of measles. This School IAQ Brief explains why.
Published: June 2026
Other Resources
A Cost-Benefit Analysis of CalSHAPE School HVAC Upgrades
A pro bono analysis by economist Richard Bruns, commissioned by Clean Air Allies, estimates an average 30x return on investment for CalSHAPE-funded school HVAC upgrades, with benefits including improved learning outcomes, reduced infections, and lower asthma burden.
Published: May 2026