# A teacher and an AI tutor after school.

A World Bank randomized trial studied a six-week, teacher-supported after-school English program in Edo State, Nigeria, where first-year senior secondary students used Microsoft Copilot powered by GPT-4.

Canonical: https://brightaifuture.com/discoveries/nigeria-ai-tutor
Format: discovery
Source publication: 2025-05-19
Bright publication: 2026-09-07
Substantive update: None recorded
Evidence and review: Demonstrated; confidence: unassessed; approved; ai-assisted. AI-assisted editorial comparison with the cited primary source; result, setting, source date and limitations retained. Independently checked within the research team. Publication authorized by the site owner; no human source review is claimed.

## The human problem

Students need responsive practice and feedback, but individualized tutoring is often unavailable in public-school settings.

## The prior constraint

Earlier education technology evidence often came from wealthier settings or depended on specialized, costly software.

## AI’s actual role

Students used a generative-AI tool for curriculum-aligned English grammar and writing work after a teacher introduced the lesson and guided the sessions.

## The documented result

The randomized evaluation reported a 0.31 standard-deviation improvement on its assessment covering English topics, AI knowledge, and digital skills after the six-week intervention.

## Why it may matter

The finding concerns a designed human-and-AI learning setting in a public-school context, rather than assuming chatbot access by itself creates learning.

## Limitations

The intervention was short and teacher-supported, so it does not establish effects of unsupervised chatbot use.

The central assessment was designed for the study; it does not establish long-term retention or broader academic outcomes.

Results from Edo State and English instruction may not transfer directly to other subjects, languages, or school systems.

## Unresolved questions

Do gains persist, transfer to other learning, or change school completion?

What teacher preparation and infrastructure are necessary?

How can students retain agency when the system can generate answers?

## Provenance and history

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## Original sources

- [From Chalkboards to Chatbots: Evaluating the Impact of Generative AI on Learning Outcomes in Nigeria](https://documents.worldbank.org/en/publication/documents-reports/documentdetail/099548105192529324)

## Continue exploring

- [Work & learning](https://brightaifuture.com/worlds/work)
- [How can AI expand learning while preserving human judgment?](https://brightaifuture.com/threads/learning)
- [When does a technical result become a public capability?](https://brightaifuture.com/threads/community)
- [When does help become a shortcut?](https://brightaifuture.com/experiments/learning-with-help)