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matching practices

15%

strong evidence, of 26 assessed

Evidence mix

Randomised controlled trial 1

Quasi-experimental 3

Observational / pre–post 14

Descriptive / self-reported 8

2 practices not yet assessed for evidence strength.

Most practices in: Sierra Leone (28)

Results

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Good practice Evidence: Descriptive / self-reported Top 58% 40/100 Compare

Sherbro River Estuary Blue-Carbon Agreement — Carbon-Justice Mangrove Protection (Sierra Leone)

In October 2025, 124 communities on Sierra Leone's Sherbro Island signed a 50-year blue-carbon deal with developer West Africa Blue to protect …

Bonthe, Sierra Leone

Good practice Evidence: Descriptive / self-reported Top 70% 40/100 Compare

SQAO AI Support Tool — WhatsApp RAG Assistant for Sierra Leone's School Quality Assurance Officers

MBSSE and Fab Inc built a WhatsApp RAG chatbot giving Sierra Leone's school inspectors (SQAOs) instant access to census data and policy …

Waterloo, Sierra Leone

Good practice Evidence: Descriptive / self-reported Top 58% 40/100 Compare

Freetown the Treetown — Pay-per-Verified-Tree Urban Reforestation

Freetown City Council pays community growers, mostly women and young people, per digitally verified surviving tree via a GPS/photo-audited app; about 500,000 …

Freetown, Sierra Leone

Good practice Top 76% 33/100 Compare

Freetown's TreeTracker — Micropayments for Verified Tree Survival (Sierra Leone)

Freetown City Council pays growers, mostly women and youth, mobile-money micropayments once trees are geotagged and verified via the TreeTracker app. About …

Freetown, Sierra Leone