Dan Domenech at the American Association of School Administrators blogged today on the coming release of a new documentary by Davis Guggenheim that explores how far our public education system has fallen. Yet, Domenech writes, the most recent Phi Delta Kappa/Gallup Poll found that 77 percent of parents assign a grade of A or B to the school attended by their oldest child. Meanwhile, 49 percent of parents assigned a grade of A or B to the school in their community.