Google DeepMind·· 2026-06-08
Measuring the impact of learning with AI in Sierra Leone and beyond
Measuring the impact of learning with AI in Sierra Leone and beyond
AI summary
Google DeepMind published results from a preregistered randomised controlled trial in Sierra Leone. Over eight weeks, students using Guided Learning improved maths scores by 0.258 standard deviations over controls, equivalent to around 1.2–1.7 years of conventional progress.
Selection record
Threshold 60Official, first-handFirst 62Second 62
AdmittedSum of both 124 ≥ twice the threshold 120
- Source tier
- Official, first-hand; this tier's threshold is 60
- Pre-filter
- passed：AI教育试点研究，含Gemini教学效果数据
- Why it was chosen
- Quantified trial results and teacher-led implementation show actual benefits and limitations of AI-assisted teaching.
A model scores each item twice, independently, against one written standard, out of 100. An item is admitted only when the two scores add up to twice the threshold. The threshold is set per source tier.
Source: Google DeepMind · deepmind.google