Artificial intelligenceJuly 4, 2026· via The Decoder

AI in education: Two years to reveal true learning costs

AI in education: Two years to reveal true learning costs

Image : The Decoder

A landmark study tracking 26,000 students over multiple years has uncovered a troubling pattern: while AI-assisted tools helped learners complete assignments faster and earn higher grades in the short term, the long-term academic cost only became clear after two years—when exam performance dropped by up to 24 percent.

The research, conducted among Chinese high school students, highlights a growing concern in education circles: the seductive appeal of AI shortcuts may mask deeper learning gaps. Students who relied on AI for homework saw immediate gains, but those benefits evaporated when faced with standardized assessments that required genuine understanding rather than algorithmic assistance.

The delayed effect of AI shortcuts

Most studies evaluating AI tools in education focus on immediate outcomes like assignment completion rates or short-term test scores. This study, however, followed students through their entire academic trajectory, revealing that the negative impact on core learning competencies emerged only after prolonged exposure. The 24 percent decline in exam performance suggests that AI assistance may create a false sense of mastery, allowing students to bypass the struggle that reinforces true knowledge retention.

Why immediate gains can be misleading

Educators warn that the allure of faster results risks undermining foundational skills. When AI handles complex problem-solving or writing tasks, students miss the iterative process of grappling with material, receiving feedback, and internalizing concepts. The study’s findings imply that traditional evaluation methods—like final exams—are where the cracks in AI-assisted learning truly show, often too late for intervention.

The research underscores a critical challenge for schools integrating AI tools: balancing short-term efficiency with long-term educational integrity. As institutions adopt these technologies, the study serves as a reminder that academic success cannot be measured solely by grades achieved today.


Source: The Decoder. AI-assisted editorial synthesis — TechnoExpress.

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