Nothing came to epitomize the era of education reform under Mayor Michael R. Bloomberg like the A-through-F letter grades he gave New York’s schools.
Educators obsessed over them, hoping their schools would avoid being marked for closing. Principals pored over them, knowing that fluctuations in test scores could determine end-of-the-year bonuses. Parents in some neighborhoods proudly ignored them, arguing that a single letter could not sum up the quality of a school.
On Wednesday, the Bloomberg administration released its last batch of grades for more than 1,600 public schools. Across the city, 63 percent of schools received As and Bs, and there were signs that schools were better preparing students for college.