This complete resource contains the essential skills children should acquire in the first five years of school. Head of the Class provides valuable references for kindergartend and first, second, third, and fourth grades. Bound-in perforated answer keys. Based on a set of well-researched benchmarks used to mearue grade-level skills. Covers math and language arts in the earlier grades; adds science and social studies in the later grades. Presents skills through color-coded pages that can be used in any order. Can be used to review a grade just completed, practice skills being covered in the current grade, or prepare for an upcoming grade.