Wonder & Worry
An open notebook and a seedling on a windowsill

Nine areas

Educational AI, learning and skill

Learning is the slow work of building a mind that can manage on its own. AI can help with that work, or it can do the work for us. A tutor that asks a good question at the right moment can lift a struggling student. A tool that hands over finished answers can leave the same student feeling capable while learning little. The difference often lies in design, and in how teachers, parents and learners choose to use these tools. The stakes are practical, because exams, jobs and health care depend on real skill. They are also personal, because the confidence that comes from earning a skill is hard to replace.

Wonder

A patient teacher for all

Every learner has a patient tutor, and every teacher has help.

  • Over double

    the median test gains with a well-designed AI tutor, against an active-learning class, in a randomized trial of 194 Harvard physics students. Measured

  • 4 points

    more likely to master a topic: students whose human tutors had an AI assistant. The gain was 9 points with lower-rated tutors. Not yet peer reviewed. Measured

  • 0.31 standard deviations

    higher scores for Nigerian secondary students after six weeks of teacher-guided sessions with an AI tutor, in a World Bank randomized trial. Only 759 of 1,328 students sat the final test, and the study is an unreviewed working paper. Measured

  • 66.2% vs 60.7%

    Students tutored by an AI that human tutors supervised solved a new problem on the next topic slightly more often than with human tutors alone. The difference's uncertainty range includes zero, and the study is a preprint by the AI's developers. Measured

It takes Guardrails. In another trial a plain chatbot left students worse off once it was taken away.

Worry

Learning and skill

  • +48%, then 17% worse

    Students using plain GPT-4 for math practice scored 48% better in practice, then 17% worse than classmates on an exam without AI. A tutor with guardrails largely avoided the harm. Measured

  • 28.4% to 22.4%

    Experienced doctors' adenoma detection rate in colonoscopies done without AI, before and after they began using AI assistance. Observational. Measured

  • 67%

    of US students agree that the more students use AI for schoolwork, the more it will harm critical thinking. Survey

  • 12%

    of UK undergraduates said in a December 2025 survey that they had put AI-generated text directly into assessed work, up from 8% in 2025 and 3% in 2024. These are self-reports. Survey

  • 59%

    of US teens said using AI to cheat happens at least somewhat often at their school, and 10% said they do all or most of their schoolwork with a chatbot's help. The first figure is what teens perceive. Survey

  • Less critical thinking

    was reported by knowledge workers who had more confidence in AI, in a survey of 319 workers describing 936 tasks. This is a self-reported association and does not show cause. Survey

What is being done

Schools are being required to decide.

Ohio law required every school district, community school and STEM school to adopt a policy on AI use by 1 July 2026. Schools could adopt the state's model policy or write their own.

For artists and musicians

Nobody has measured it for the arts.

No controlled study has yet measured how much skill is lost, or gained, when musicians, painters or writers lean on AI. The evidence so far comes from math classrooms and hospital clinics.

Worth knowing

A much-cited positive result was withdrawn.

A widely cited 2025 meta-analysis reporting large learning gains from ChatGPT was retracted in April 2026. The editor cited discrepancies in the analysis. The case for learning gains rests on fewer and shorter trials than the headlines suggest.

An open question

Do skills learned with AI support last for years once the support is taken away, or do they fade?

This page does not list everything. Last reviewed October 11, 2026.

Source 13

Bastani H, et al. Generative AI without guardrails can harm learning. PNAS 122(26), 2025. doi:10.1073/pnas.2422633122

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Source 14

Budzyń K, et al. Endoscopist deskilling risk after exposure to AI in colonoscopy. Lancet Gastroenterol Hepatol 10(10):896-903, 2025. doi:10.1016/S2468-1253(25)00133-5

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Source 15

Schwartz HL, Diliberti MK. More Students Use AI for Homework, and More Believe It Harms Critical Thinking. RAND RR-A4742-1, 2026 (fielded Dec 2025). rand.org/pubs/research_reports/RRA4742-1.html

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Source 88

Stephenson R, Armstrong C. Student Generative AI Survey 2026 (HEPI Report 199). HEPI / Kortext, Mar 2026. hepi.ac.uk/reports/student-generative-ai-survey-2026/

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Source 90

Pew Research Center. How Teens Use and View AI. 24 Feb 2026. pewresearch.org/internet/2026/02/24/how-teens-use-and-view-ai/

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Source 89

Lee H-P, et al. The Impact of Generative AI on Critical Thinking. CHI 2025. doi:10.1145/3706598.3713778

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Source 48

Kestin G, et al. AI tutoring outperforms in-class active learning. Scientific Reports 15:17458, 2025. doi:10.1038/s41598-025-97652-6

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Source 49

Wang RE, et al. Tutor CoPilot: A Human-AI Approach for Scaling Real-Time Expertise. arXiv:2410.03017, 2025 (preprint; 900 tutors, 1,800 students).

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Source 91

De Simone ME, et al. From Chalkboards to Chatbots: Evaluating the Impact of Generative AI on Learning Outcomes in Nigeria. World Bank Policy Research Working Paper 11125, 2025. documents.worldbank.org/curated/en/099548105192529324

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Source 92

LearnLM Team (Google) and Eedi. AI tutoring can safely and effectively support students: An exploratory RCT in UK classrooms. arXiv:2512.23633, 2025 (preprint).

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Source 93

Ohio Revised Code 3301.24, Artificial intelligence policy (House Bill 96, effective 30 Sep 2025). codes.ohio.gov/ohio-revised-code/section-3301.24

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Source 94

Retraction Note: Wang J, Fan W. The effect of ChatGPT on students' learning performance, learning perception, and higher-order thinking. Humanities and Social Sciences Communications 13:528, 2026. doi:10.1057/s41599-026-07310-z

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