The number of New Hampshire public school districts offering full day kindergarten has been on the rise since 1999, when there were fewer than a dozen.
Using reports and surveys conducted by the N.H. Department of Education and the N.H. School Administrators Association, and looking at full day kindergarten programs taught by certified instructors and open to all children in the town or district, these maps chart the growth in these programs across the state over time. In particular, they illustrate the virality of program adoption - once one town in a geographical area adopts full day kindergarten, it is more likely that others in the same area will follow suit.
Click through the slideshow for a closer look at the maps.