BRIGHT EVIDENCE PACK / Demonstrated
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 Bright record · JSON evidence pack · Key-facts embed
Dates and assessment
- Source published
- 2025-05-19
- Bright published
- 2026-09-07
- Substantive update
- None recorded
- Evidence state
- Demonstrated
- Independent verification
- Not established by this source review
- Last source review
- 2026-09-07
The claim in context
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.
Original evidence
Attribution
Credit Bright AI Future and link the canonical Bright record.
- Link to the canonical Bright record.
- Keep material limitations with the claim they qualify.
- Link to the original evidence when repeating a substantive claim.
- Do not describe a source check or organization-reported result as independent verification.
Linked source material, quotations, trademarks and media remain subject to their owners’ terms. No reuse right is granted for third-party media.