15. Gambia
Literacy rate: 55.50%
While they based their system on the British education system, Gambia failed to realize that the people could barely afford to pay the high fees, which led to many parents being unable to send their children to school. However, the president abolished the fees for the first six years of education while also establishing an education reform program, which led to an increase in the literacy rate. As shown, however, there is still a long way to go.