4-year-olds in preschool, 2003-2013
The percent of 4-year-olds in state-sponsored preschools has grown dramatically over the past 10 years, and now all but 10 states have some kind of program. These numbers do not include private preschool programs, or students enrolled in the federally sponsored Head Start program.
Source: The National Institute for Early Education Research
"No program" = State did not provide data or did not have a pre-K initiative comparable to other states.