We just wanted to point your attention to a new paper from the National Bureau of Economic Affairs that studied Florida children between the ages of 6 and 15 (August 31 is the cut off in that state) and found that the September-born students outperformed their demographically similar August-born peers. All the way through college.
David Figlio, one of the study’s authors, estimated the gap to be the equivalent of 40 points on the 1600 point scale SAT test. The study found that September birthday students in the middle socioeconomic group were 2.6% more likely to attend college and 2.6% more likely to graduate from a “selective college” as well. (The authors defined “selective colleges” as those rated “competitive” or above as recorded in the NCES-Barron’s Admissions Competitive Index Data Files for 2004. They achieved similar results when they limited their observations to those colleges rated “very competitive” or above.)
To take it even one step further, the study also found that August-born children were 1 percent more likely to be incarcerated for a juvenile crime.