Poisonings of Schoolgirls in Iran: An Open-Source Investigation

Read the report: School Poisonings in Iran: An Open-Source Investigation

On November 30, 2022, in the midst of protests around the country in Iran for the “Woman, Life, Freedom” movement, schoolgirls at Noor Conservatory Girls’ School in Qom City experienced a bizarre and terrifying event while at school. They smelled “poisonous gas” and experienced symptoms that sent 18 of them to the hospital. From November 2022 to May 2023, there were hundreds of similar poisoning incidents reported at schools around the country, the vast majority of them at girls’ schools. Videos captured by witnesses depicted girls coughing, vomiting, and struggling to walk in front of their schools. Yet at the same time, contradictory information began calling these incidents into question, casting doubt on the seriousness of the girls’ symptoms or claiming that the poisonings were psychological. Eventually, the Iranian government concluded in its own investigation that the vast majority of the alleged poisoning incidents were caused by girls’ anxiety or hysteria.  But is that actually true?

Over the past year and a half, the Stanford Humanitarian Program, with support from the Hamid and Christina Moghadam Program in Iranian Studies, has conducted an open-source investigation into these poisoning incidents, working to uncover what actually happened and whether the Iranian government covered them up.

In this talk, Bailey Ulbricht, Allen S. Weiner, and Mobina Riazi will present their newly released report on the poisoning incidents, including what happened, what the Iranian government did in response, and what the legal implications under international law are, including next steps for justice and accountability.

Bailey Ulbricht, JD ’22, is the founding Executive Director at the Stanford Humanitarian Program, where she works on legal projects aimed at reducing harm in conflict settings and other insecure environments. Her research interests include laws governing the use of force and the intersection of technology and international humanitarian and human rights law, including how technology can be leveraged to gather evidence of possible legal violations.

Allen S. Weiner, JD ’89, is an international legal scholar whose research and teaching focus primarily on the fields of international security and international conflict resolution. He also studies the challenges of online misinformation and disinformation. In the international security realm, his work spans such issues as international law and the response to contemporary security threats; the relationship between international and domestic law in the context of armed conflict; the law of war (international humanitarian law); just war theory, and international criminal law (including transitional justice).  Weiner’s scholarship is deeply informed by experience; he practiced international law in the U.S. Department of State for more than a decade advising government policymakers, negotiating international agreements, and representing the United States in litigation before the International Criminal Tribunal for the former Yugoslavia, the International Court of Justice, and the Iran-United States Claims Tribunal. Senior Lecturer Weiner is director of the Stanford Program in International and Comparative Law, director of the Stanford Humanitarian Program, and director of the Stanford Center on International Conflict and Negotiation. Before joining the Stanford Law School faculty in 2003, Weiner served as legal counselor at the U.S. Embassy in The Hague and attorney adviser in the Office of the Legal Adviser of the U.S. Department of State in Washington, DC. He clerked for Judge John Steadman of the District of Columbia Court of Appeals.

Mobina Riazi is a master’s student in communications at Stanford University, with an emphasis on media studies. She earned her bachelor’s degree in political science, with a minor in Iranian studies, from Stanford University in 2025. Her research focuses on media, governance, and the law, with particular attention to digital repression and state power in authoritarian contexts.

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