DETROIT — An Oakland County teacher has been placed on administrative leave after she assigned classwork that depicted former President Barack Obama alongside primates. The picture assignment asked “Which of the following are primates?” and showed the head shot of Obama, America’s first Black president, among several animals. The Roeper School leadership acknowledged the racial offense, saying it was caught after it was distributed to its upper school class last week. Carolyn Lett, the school’s director of diversity, said the worksheet went out May 11 and, the morning after, the school receive…