U.S. COLLEGES TURN TO ORAL EXAMS TO SAFEGUARD LEARNING IN THE AGE OF AI

As generative AI tools become deeply embedded in student workflows, universities across the United States are reviving an academic format that predates the written exam itself: the oral defense.

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Professors and administrators say the return to spoken examinations — whether in the form of Socratic questioning, live defenses, or structured interviews — reflects growing concern that written assignments alone can no longer reliably measure authentic learning.

The shift marks one of the clearest structural responses yet to the rapid rise of AI-generated coursework. While tools capable of drafting essays, solving equations, and summarizing complex research have become widely accessible, faculty members increasingly question whether submitted work represents genuine comprehension.

THE REVIVAL OF THE ORAL DEFENSE

At Cornell University, biomedical engineering professor Chris Schaffer has begun requiring students to defend their written assignments in short oral sessions. Instead of grading solely on polished reports, he invites students to explain their reasoning step by step. The approach, he argues, quickly reveals whether the student understands the material or simply assembled a technically correct response with outside assistance.

Generative AI systems can produce essays that are grammatically flawless and logically structured. But when students are asked to elaborate on specific arguments, clarify assumptions, or extend their reasoning into new scenarios, weaknesses can surface. Oral exchanges expose depth of understanding in ways static documents often cannot.

Although oral examinations are common in graduate programs and doctoral defenses, they have historically been rare in U.S. undergraduate education. That is beginning to change. Faculty members say the format offers a uniquely direct way to assess comprehension. When students must respond in real time, they cannot rely on algorithmically generated text or prewritten prompts.