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Radon and Asbestos in Older Schools: The Two Tests Buildings Often Skip

One is covered by a federal law most parents have never heard of. The other isn't covered at all.

Two invisible risks in aging school buildings

A huge share of American schoolchildren attend classes in buildings constructed decades ago. Two of the biggest environmental risks in those buildings — asbestos and radon — are completely invisible, and they're handled very differently under the law. One has a dedicated federal statute. The other has only a recommendation.

Knowing which is which tells you exactly what you can demand to see, and what you may have to ask for.

Asbestos: the law parents have never heard of

There's a federal law specifically about asbestos in schools: AHERA, the Asbestos Hazard Emergency Response Act, passed in 1986. It applies to all public school districts and non-profit private K-12 schools.

AHERA requires every covered school to inspect its buildings for asbestos-containing materials, develop a written asbestos management plan, re-inspect every three years, conduct periodic surveillance, use trained and accredited staff for the work, and — critically for parents — keep the management plan on file and make it available to the public.

What AHERA does and doesn't guarantee

AHERA does not require schools to remove all asbestos. In many cases, intact asbestos-containing material that isn't being disturbed is safer left in place and monitored than ripped out. What AHERA guarantees is that the school knows where its asbestos is and has a plan to manage it.

The practical takeaway for parents: you can request to see your school's AHERA management plan, and the school is legally obligated to make it available. That document tells you where asbestos-containing materials are, their condition, and what the district is doing about them. If a school can't produce it, that's a meaningful red flag.

Radon: recommended, rarely required

Radon — the invisible radioactive gas that seeps up from soil and is the second-leading cause of lung cancer — has no federal law equivalent to AHERA for schools. The EPA recommends that all schools test for radon, and some states require it, but in much of the country it's entirely voluntary.

That's a real gap, because the EPA has estimated that nearly one in five schools has at least one classroom with radon above the action level of 4 pCi/L. Children spend a huge portion of their day in these rooms.

Why ground-floor classrooms matter most

Radon enters buildings from the soil underneath, through cracks and openings in the foundation. The rooms in most direct contact with the ground — ground-floor classrooms, basement-level spaces, portable classrooms set on slabs — tend to have the highest levels.

Because radon varies room to room and even season to season, meaningful school testing places detectors in many ground-contact rooms, not just one spot in the building.

What parents can request

For asbestos: ask to see the school's AHERA management plan. It's a public record and the school must provide it.

For radon: ask whether the school has ever tested for radon, when, in which rooms, and what the results were. Because there's often no legal requirement, the honest answer may be 'never' — which is itself useful information you can bring to the school board.

What administrators are responsible for

On asbestos, AHERA compliance is not optional — the inspections, the management plan, the three-year re-inspections, and public availability are all legal obligations with real penalties for noncompliance.

On radon, while testing may not be legally required, the EPA's guidance is clear and the test is inexpensive relative to the risk. A district that tests its ground-contact rooms, publishes the results, and mitigates any room above 4 pCi/L is doing exactly what the science supports — and creating a documented record of having acted responsibly.