The committee, chaired by Rep. Paul Ryan, R-Wisc., says that the program is ineffective and offers opportunities for fraud.
The Obama administration is also not giving up on its proposal to spend $75 million on early childhood programs, which would be paid for through a tobacco tax.
Nashville's schools chief cites the need for English-immersion programs for young children as he continues to lobby for free, universal pre-K in that city.
Most principals separate twins in kindergarten to promote independence and academic achievement, but do so based on unfounded beliefs, a study says.
Public preschool programs, while welcomed by early education advocates, could put pressure on private providers if the system does not take their needs into account, early education finance experts say.
Advocates for child health have offered several guidelines for preschools and childcare providers designed to promote activity and good nutrition.
With the expansion of universal preschool, a pair of experts warn of a possible overdiagnosis of attention deficit hyperactivity disorder in very young children.
U.S. Secretary of Arne Duncan told state leaders at the National Governors Association in Washington they should be "in front of" the growing interest in early-childhood education.
Nashville's school board agreed to create two pre-K hubs, the first step in a plan to offer universal preschool by 2018, but the deal hinges on budget approval.
Teachers are spending too much time on skills most children have mastered by the time they start school, says a group of researchers.