Fresh on the heels of the news that an Oak Park principal has resigned because of ISAT testing irregularities (see below), here's news about a yearlong investigation by the Cox newspaper chain has looked into suspicious jumps in scores in districts around the country, including CPS. Looking at results for 69,000 schools in 49 states, the newspaper chain found high concentrations of suspicious scores in about 200 schools. For CPS, the report found scores worth flagging in 4.5-5 percent of classroom results it studied between 2008 and 2011. The dots are suspicious test score results. For some, this will mean that cheating is rampant and that test based accountability is the problem. ("The predictable result of over-reliance on test scores," according to FairTest.) For others, 200 classrooms in a nation the size of the US isn't necessarily such a big deal, and there are some questions about the study methodology being raised, too. As for CPS, I've put in calls to CPS and ISBE to see what they have to say. I remember hearing that ISBE started looking at suspicious scores and erase rates last year, an attempt to get proactive after the scandals in Atlanta and elsewhere. But I don't recall any followup from them about what if anything they found from last spring.