Study Reveals AI-Exposed Courses Contribute to Grade Inflation in Higher Education
A recent study conducted by Igor Chirikov, a senior researcher at the Center for Studies in Higher Education at the University of California at Berkeley, has identified a significant link between grade inflation and courses that allow assignments to be completed using artificial intelligence (AI). The study analyzed 500,000 grades from 319 courses across 84 departments at a large, unnamed research university in Texas, covering the period from 2018 to 2025. It found that the introduction of AI tools like ChatGPT has led to a 30% increase in the share of A grades in 'AI-exposed' courses, particularly those with assignments in writing and computer coding. The study suggests that AI is being used as a substitute for student effort on take-home assignments, rather than enhancing learning, as evidenced by the disparity between high homework grades and lower exam performance.