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Is it time to reconsider NYC's age-cutoff for kindergarten?
By
Jessica Gould
Published Aug 4, 2026
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By
Jessica Gould
Published Aug 4, 2026
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New York City's longstanding age cut-off for kindergarten has long been a source of heartache and headaches for some parents with kids born late in the year. Now a group of parents say Mayor Zohran Mamdani’s new free childcare program for 2-year-olds is a perfect time to reconsider the deadline.
New York City’s Dec. 31 cutoff is among the latest in the country. That means about a third of students are only 2 when they start 3-K in September, are 3 when they start pre-K, and 4 when they start kindergarten.
Some parents worry the setup can lock younger kids into classes where they’re consistently behind their peers, potentially hindering their academic futures and self-esteem.
“It always felt strange to me that New York City was one of the only places that had this specific cutoff and that it was so different than the rest of the country,” said Caitlin Moses, whose son with a Dec. 28 birthday struggled as one of the youngest kids in his kindergarten class.
Alina Adams, who runs the site nycschoolsecrets.com, said 2-K represents an opportunity to shift the deadline, or at least offer more wiggle room.
“With that in play, the excuse of free childcare goes away, you can move the cutoff to September 1st,” Adams said.
The city maintains that the Dec. 31 cutoff gives parents access to free childcare through public school at an early age and provides a deadline that is easy for parents to remember.
"This longstanding policy allows children born within the calendar year to begin school earlier, reflecting research showing the benefits of early childhood education while providing families with a clear and consistent enrollment standard,” said education department spokesperson Chyann Tull.
But Adams, who consults with families to help them navigate the school system, said every summer she gets frantic calls from parents wondering if there’s any flexibility in the deadline.
“I'm hearing from parents, ‘He's not toilet trained,’ or ‘She can't sit still,’ or ‘She doesn't want to separate from me,’” said Adams. “All of these things that are developmentally appropriate. But the public school system is brutally clear: [the cutoff is] December 31st.”
She said some parents worry about their kids competing with older children on the SATs and other national tests. More affluent parents sometimes enroll their kids in an extra year of preschool so their kids can enter kindergarten older.
Nationally, Sept. 1 is the most common cutoff, according to the Education Commission of the States. New York state lets school districts decide their own deadlines. Much of Westchester also has Dec. 31 cutoffs, while Albany and Binghamton use Dec. 1. Many private schools in New York City use Sept. 1.
The city argues that the current age cutoff for kindergarten gives parents access to free childcare through childcare through public school at the earliest age possible.
NYCPS/Flickr
Research shows birthdates and cutoffs can make a difference in a student’s academic and social-emotional experience.
In 2020, an analysis by Chalkbeat and the Independent Budget Office found kids with birthdays in the last two months of the year were 65% more likely to be labeled as having a learning disability than those born during the first two months.
According to some studies, older children also demonstrate more self-regulation and score higher on tests. Boys in particular may benefit from a later start.
But some studies suggest the benefits of delaying kindergarten — also known as “redshirting” — diminish over time.
Jonathan Collins, a professor of political science and education at Columbia University’s Teachers College, said research also shows younger students can benefit from being in a classroom with older kids. “It exposes them to more people engaging at an advanced level, which can expedite their own development,” said Collins, who serves on the Panel for Education Policy.
He added that starting school a few months earlier can be a huge benefit to families who struggle to afford childcare. “The December 31 cutoff just opens up so much more access to families,” he said. “If you’re a single parent scraping to survive in New York City and you have an opportunity to put your kid in free city provided childcare now … it’s a huge burden lifted off your shoulders.”
But Moses said the challenges for her son with a late December birthday were clear. As the youngest kid in his kindergarten class, he struggled to sit still, prompting his teachers to say he had a behavioral problem.
"For our child to be labeled as having a behavior problem when they're 4 because they can't sit down and spend a whole day focused on lessons is awful,” she said.
From kindergarten through second grade she said she “asked repeatedly” for permission to repeat a grade so that he could be a bit older. “And they kept saying no,” she said.
By second grade, Moses said her son was saying he’s “a bad kid” and “not smart.”
That January they switched him to a charter school that would let him repeat first grade, which she said has paid off. "He has been really thriving,” she said.
But she said it shouldn’t be so difficult for families to make the change. "I think it would produce a lot less harm and a lot more equity if teachers and principals along with families were allowed to hold their child back when it’s in their best interest,” Moses said.
Chandler Patton Miranda, an education professor and parent, said the challenges for children born close to the cutoff have become more acute now that kindergarten is more academic and less play-based.
“Kindergarten has become the new first grade,” said Miranda, who wrote about the experience of sending her son with an October birthday to kindergarten at 4.
She said her son “went into kindergarten excited to learn and loving school, and left kindergarten thinking he was stupid and bad. And that was just absolutely devastating to watch that transition happen,” she said.
She and her husband were able to find another public school that let him repeat kindergarten.
“But we still had to really reckon with the anxiety that was created for him,” she said. “It was really detrimental to his confidence and his ability to see himself as smart and capable.”
She said she hopes the Mamdani administration will consider establishing a version of “transitional kindergarten” like California, which offers parents of 4-year-olds the option of an extra year as a bridge between their preschool and elementary schools.
Adams said there will always be youngest and oldest kids in a grade. But she said the public school system should allow parents and educators more input. “The least they can do is offer parents some flexibility,” she said. “It's as simple as that.”
Education department officials told Gothamist that families concerned about their child’s readiness for a certain grade should speak to their school or superintendent.
Tagged
education
new york city
Jessica Gould
Jessica is the education reporter for WNYC and Gothamist. During the Covid-19 pandemic, Jessica reported on the shutdown and reopening of the nation’s largest school system, highlighting the unprecedented impacts on learning, health and mental health for students, staff and families. Got a tip? Email [email protected]
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