In 1997, Nana-Fosu and her husband used their personal funds to open the John William Montessori School in Kumasi, Ghana and enrollment has grown from 70 to nearly 700 students.
In Africa, there is no government-paid public education, and many parents in Ghana are too poor to pay tuition. The school gathers its finances from tuition and donations.
JWMS also accepts additional challenges. Children, who are orphaned, physically challenged, or with families who want more for their children, but cannot afford to pay, live at the school and are supported by the funding that the school receives. The children's above-average academic performance is "very encouraging," but as they grow older and their needs increase, charitable giving is crucial to continued success.