Compared with 41-weekers, children born at 37 weeks faced a 33 percent increased chance of having severe reading difficulty in third grade, and a 19 percent greater chance of having moderate problems in math.  Children born at 38 weeks faced only slightly lower risks than those born at 37 weeks.http://www.huffingtonpost.com/2012/07/02/early-full-term-babies_n_1642546.html