(BBC) – Farmer Apollinaire Zaoro knows a thing or two about planting. While his maize and cassava grow in the field, he is sowing seeds of knowledge in young minds. The school in his village, 25km (15 miles) from the capital, has no qualified teachers. And so for the past three months, Mr Zaoro, 58, has been leading a class of 105 primary school children.

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