The literacy rate of Niger is among the lowest in the world ; in 2005 it was estimated to be only 28.7 % ( 42.9 % male and 15.1 % female ) .
The literacy rate ( the amount of the adult population who can read or write ) of Niger is among the lowest in the world . In 2005 it was estimated to be only 28.7 % ( 42.9 % male and 15.1 % female ) .