Barbara Martinez:

When New York state education officials recalibrated test scores this week, hundreds of New York City schools suddenly had vastly fewer children who could be termed “proficient” in math and English.
For many schools, the higher bar had barely an effect. For others, it was a devastating blow, revealing a much larger chasm between the city’s academic haves and have-nots.
Overall, the country’s largest school system lost a lot of ground. Last year, nearly 70% of students were considered proficient in English. Now, only 42% are. In math, 54% of city children scored proficient this year, down from 82%.
Mayor Michael Bloomberg and his schools chancellor, Joel Klein, stressed this week that the only thing that changed was the definition of “proficient,” and that the gains that New York City students have made since they took over control of schools–as evidenced by performance on national tests–are real.