Tyrese Graham is a second-year science teacher at John Marshall Metropolitan High School on the West Side of Chicago. When he started teaching there, Marshall was among the worst public schools in the city.
When Graham walked into his first class, he could hardly speak over the noise of the students. He tried to make a point by not talking.
"I'll let you finish, but realize, every moment that I'm not talking and providing you instruction, you guys will be giving that back to me," he told them.
Graham's remarks were met with a sharp rebuke from one of his students.