Data and boundary methodology
How school directory records, approximate coordinates and Ghana’s current administrative geography are represented.
Coverage
The interactive app preserves every directory row. For search-engine pages, 292 exact duplicate institution-ID rows are consolidated into one canonical profile per school.
Administrative overlay
The national baseline is the OCHA/HDX Ghana COD-AB boundary dataset. Its 16-region and 260-district geometry is completed with Guan District using OpenStreetMap relation 13804589. Guan is assigned to Oti Region and removed from Hohoe Municipal for the integrated 261-district browser layer.
Each usable school coordinate is assigned to a current region and district by point-in-polygon. Of 8,865 coordinate records, 8,863 fall inside a district polygon. Two source coordinates fall outside Ghana’s national polygon and remain explicitly flagged instead of being forced into an administrative area.
Location limitation
Sources and licences
- OCHA/HDX Ghana COD-AB — CC BY-IGO.
- OpenStreetMap Guan District relation — Open Database Licence.
- Ghana Education Directory — school directory records retrieved 2 September 2026.