Should 'Preschool for All' Take a Targeted Approach?

the Journal: There's a conundrum facing universal preK. According to researchers, the disadvantaged see definite benefits from free preschool, with mid-term academic gains and increased "quality" parental involvement. But when preschool is available to all, those who can afford private schools begin to switch to the free, public system, causing a "crowd out" that, among other things, increases costs to taxpayers by "as much as 19 percent" while providing no discernible benefits.

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