Digging For Data In The Garden State
In January, the New Jersey Department of Education released a report titled, “Living Up to Expectations: Charter Schools in New Jersey Outperforming District Schools.” It consisted of a list of charter schools and their students’ aggregate proficiency rates by grade, along with comparisons with the rates of the regular public school districts in which they are located. The state then tallied the number of charters with higher rates (79 percent in language arts, and 69 percent in math), and concluded – in a press release – that this represented evidence of superior performance. The conclusion was reported without scrutiny. Later that same day, NJ Governor Chris Christie formally announced his plan to expand the state’s charter school sector.
In a short post that evening, I pointed out the obvious fact that the state’s analysis was wholly inadequate to demonstrate charter performance – good, bad or indifferent – relative to comparable regular public schools. Rutgers Professor Bruce Baker did the same, and also presented a school-level analysis showing that there was
