One of the most common questions that I hear from New York City parents is: When must my child start Kindergarten?

For public schools, the answer is simple: Your child must start public school Kindergarten the calendar year when they turn 5. It doesn’t matter if their birthday is in early January, and they will be 5 years and nine months in September, or their birthday is in late December and they will be four years and nine months in September, they must start in the same grade at the same time.

Watch this video for more information.

(Though not a public school, Hunter College Elementary follows the same schedule.)

Private school is a different story. The majority of private schools set their birthday cut-off as September 1, so that all students will have turned 5 by their first day of school.

However, many private schools recommend that summer birthday children, especially boys, wait a year to begin, meaning that they are 6 at the start of Kindergarten. In addition, many parents choose to hold their summer, and sometimes even their spring children back, in order to give them time to mature and be better prepared for the rigor of formal schooling, both the academic and the social-emotional piece.

This makes it difficult for parents who want to apply to both public and private schools, but have children on the younger side, to get the process done in one year. They don’t want to hold their child back but, at the same time, they don’t want them to be considerably younger than their peers.

In response to that, one independent school, the all-boys, K-12 Browning School is launching two new programs to ameliorate the above issue.

Starting with September 2026, Browning will make two major changes to their admissions process:

• They will move the birthday cut-off for their Kindergarten class to December 31, like the public schools
• They will open a KinderFirst class specifically for boys with birthdays between May 1 and October 31 2020, who will complete both Kindergarten and first grade in a single academic year and join a newly combined second grade in September 2027.

When I spoke with Director of Admission Kelly West about it, she explained that their reasons for the changes came from Browning’s commitment to meeting every boy where they are at, while making them feel both challenged and cared for.

When Browning looked over their history of incoming classes, they realized that Kindergarten already spanned a developmentally wide range of boys. In addition, the rising cost of tuition has prompted parents to start their sons’ educational journeys earlier, instead of paying for another year of pre-school.

Families who apply their sons for admission to Browning for September 2026 will have the option of opting for regular Kindergarten or for KinderFirst. 

According to West, every boy will be assessed on their own merits. Those looking to attend KinderFirst will be interviewed twice; in the fall during the initial cycle and again in January before final decisions are made and notifications sent out on February 5, 2026. 

It is entirely possible that some boys in KinderFirst will be younger than those in regular Kindergarten. The point is to ditch arbitrary birthday cut-offs and focus on what each individual child needs now. Furthermore, all KinderFirst boys will be re-assessed at the end of the academic year to ensure they are prepared to move onto second grade.

Will this unique approach spread to other independent schools? What about to public schools?

Just like it is (almost) impossible to hold a child back in public school, it is equally (almost) impossible to accelerate them, even though test scores demonstrate that more than 50 percent of students are capable of doing more advanced work.

Could this be the first step to all schools providing students with the education they actually require, rather than staying chained to the outdated assumption that all students develop on exactly the same time-table?

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We will discuss Kindergarten starting age and much, much more at our “Getting into NYC Kindergarten” workshop. RSVP, here.