Alan Borsuk:

Three years ago, the gap between white and black high school sophomores in Milwaukee Public Schools in reading proficiency was 33 percentage points. This year, it was 35 points.
In math, the gap was 36 points three years ago and 42 this year, according to the data released Tuesday by the state Department of Public Instruction and MPS.
Two years ago, 37% of black sophomores in MPS were rated proficient or advanced in reading, based on their performance on the statewide standardized tests. This year, it was 31%. In math, the figure is 18%, down from 20% in each of the prior two years.
That means the results for 10th grade, the most advanced point in which standardized tests are given in Wisconsin, are important.
That means it matters in the big picture that at Custer High School, only 27% of 10th-graders who had been in the school for a full year were proficient or better in reading. In recent years, that figure has gone up and down a bit. What was it four years ago? 27%.
It matters that at Genesis, a small high school in the building that was formerly North Division High, only 14% of sophomores were proficient in reading and 4% in math.