In 1998, my 6-year-old son walked onto his Los Angeles elementary school campus and into a preventable crisis.

A school gardener wearing a full hazardous materials suit was spraying pesticides, unaware that children were nearby. My son, unprotected, was sprayed directly in the face with a toxic pesticide. Within minutes, he struggled to breathe and suffered a severe asthma attack.

He recovered. But one question stayed with both of us: How could this happen at a school?

The contradiction was impossible to ignore: If the pesticide required an adult applicator to wear full protective equipment, why was it considered safe to use where children could be exposed?

California's experience demonstrated that schools do not have to choose between controlling pests and protecting students. They can accomplish both.

Children are not simply smaller adults. Pound for pound, they breathe more air; consume more food and water; and their brains, lungs, immune systems, and endocrine systems are still developing. These differences make them uniquely vulnerable to environmental chemicals. Research has linked exposure to certain pesticides with asthma, learning and developmental problems, neurological effects, endocrine disruption, and other long-term health concerns. Children cannot choose where they spend their days, nor can they protect themselves from environmental hazards created by adults. That responsibility belongs to us.

My son's exposure changed the course of my life. It led me to establish California Safe Schools, a nonprofit organization dedicated to protecting children from harmful environmental exposures. I worked with parents, educators, physicians, scientists, and school officials to create the groundbreaking Los Angeles Unified School District Integrated Pest Management Policy, one of the first of its kind in the nation. Rather than relying on routine pesticide spraying, the policy embraced the Precautionary Principle: When there is credible evidence that a chemical may harm children's health, schools should take preventive action even if every scientific question has not yet been answered. Simply put, children's health should come before convenience.

The policy also established the public's Right to Know, recognizing that parents, teachers, and school employees deserve timely information about pesticides used on school campuses. Families cannot make informed decisions or advocate for their children's health if they are unaware of when or what pesticides are being applied. Transparency became a cornerstone of protecting students.

The Los Angeles policy became a model for California and helped pave the way for the Healthy Schools Act of 2000, which required schools to notify parents and staff before pesticide applications, maintain records of pesticide use, and encourage schools to adopt Integrated Pest Management practices that emphasize prevention and least-toxic pest control methods.

California strengthened these protections even further with AB 405, authored by Assemblymember Cindy Montañez (D-39), sponsored by California Safe Schools, and signed into law by Gov. Arnold Schwartzenegger in 2005.The law prohibited the use on school sites of experimental pesticides, pesticides under conditional registration that had not completed all required health and environmental testing, and pesticides that the US Environmental Protection Agency was phasing out because of health or environmental concerns. The legislation recognized a simple but important principle: Children should never be exposed at school to pesticides that have not been fully evaluated for safety or that regulators have already determined should be removed from use. AB 405 closed important gaps in school pesticide protections and reinforced California's commitment to putting children's health first and protecting more than 6 million students, teachers, and staff.

Over the past 28 years, California Safe Schools has continued to work with parents, educators, students, scientists, physicians, school officials, and policymakers to advocate for safer school environments. One lesson has remained constant: Pesticide exposure in schools is almost always preventable.

Pesticides are designed to kill living organisms. While they target insects,........

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