We use data from over 25,000 U.S. parents interviewed in the 1996 and 2007 National Household Education Surveys to address two under-researched questions. The organizing framework for these questions is the No Child Left Behind Act of 2001. First, did school-based parental involvement change during 1996-2007? Second, do the predictors of this parental involvement change during 1996-2007? We researched two empirical national trends from 1996 to 2007: (1) aggregate parental involvement levels increased, and (2) parents who have traditionally struggled to become involved in their children's school continue to do so increasingly and disproportionately.