Closing the Achievement Gap for Children of Foreign-born Black African Immigrants, in Harlem. Educator François Nzi’s solution. By Mamadou Niang Aissita Koné comes home from work at 4:30 pm to fix dinner for her three teenage girls — her eldest child, Aboubacar, a 20-year-old young man, is a junior at Roberts Wesleyan College in Rochester, NY. …