Speaking at the Detroit Economic Club Monday, Donald Trump's proposal also calls for scrapping the federal Child and Dependent Care tax credit.
New research shows that learning more advanced content in kindergarten, such as simple addition and subtraction, not just counting, makes for bigger gains in mathematics later on.
Early child was mentioned once by Republicans, multiple times by Democrats, at this month's conventions.
U.S. elementary-grade teachers get far less training than teachers in high-achieving countries for deep understanding of the foundational math, reading, and science content they teach.
As important as preschool is, a new report says the quality of the early elementary years is also critical and shouldn't be ignored.
Away from the fireworks of the Republican National Convention floor, an event moderated by Education Week's Lisa Stark focused on early education and public policy.
A proposal in the Republican platform draft to oppose prekindergarten as state intrusion into the family fell by the wayside in the final document.
In a first for the U.S., Vermont now requires communities to offer 10 hours a week of free preschool to 3- and 4-year-olds.
Early-childhood education has been one of the legislative priorities for Indiana Gov. Mike Pence, who is walking away from a re-election battle to be Donald Trump's running mate.
Eighteen states offer high-quality preschool programs, but serve less than 30 percent of their 4-year-olds.