A new study of New Orleans (NOLA) schools since Katrina, published by the Education Research Alliance (ERA), has caused a predictable stir in education circles (the results are discussed in broader strokes in this EdNext article, while the full paper is forthcoming). The study’s authors, Doug Harris and Matthew Larsen, compare testing outcomes before and after the hurricanes that hit the Gulf Coast in 2005, in districts that were affected by those storms. The basic idea, put simply, is to compare NOLA schools to those in other storm-affected districts, in order to assess the general impact of the drastic educational change undertaken in NOLA, using the other schools/districts as a kind of control group.
The results, in brief, indicate that: 1) aggregate testing results after the storms rose more quickly in NOLA vis-à-vis the comparison districts, with the difference in 2012 being equivalent to roughly 15 percentile points ; 2) there was, however, little discernible difference in the trajectories of NOLA students who returned after the storm and their peers in other storm-affected districts (though this latter group could only be followed for a short period, all of which occurred during these cohorts' middle school years). Harris and Larsen also address potential confounding factors, including population change and trauma, finding little or no evidence that these factors generate bias in their results.
The response to this study included the typical of mix of thoughtful, measured commentary and reactionary advocacy (from both “sides”). And, at this point, so much has been said and written about the study, and about New Orleans schools in general, that I am hesitant to join the chorus (I would recommend in particular this op-ed by Doug Harris, as well as his presentation at our recent event on New Orleans).