If your child has a summer birthday, deciding when to start kindergarten can feel surprisingly complicated.
Do you send them as soon as they’re eligible? Give them another year? Will they be bored if you wait? Will they struggle if you don’t?
And then there are all the outside opinions.
Their preschool friends are going. Your neighbor sent her summer-birthday child and says they did great. Someone else tells you holding their child back was the best decision they ever made. And if you’re paying for another year of preschool or childcare, there are very real financial considerations involved, too.
Unfortunately, there isn’t one right answer for every child.
But there are some things I would consider before making the decision, and most of them have very little to do with whether your child can read, write their name, or count to 100.
First, Know Your State’s Kindergarten Cutoff
Kindergarten eligibility is determined by state and local requirements, so the cutoff date depends on where you live. Before making any decisions, look up the requirements for your specific state and school district, including whether your district offers an early-entry or early-admission option.
If your child’s birthday falls close to the cutoff, they could be one of the youngest children in their kindergarten class.
A few months might not sound significant to an adult, but there can be a noticeable developmental difference between children at this age. That doesn’t mean younger kindergarteners can’t thrive. Research on kindergarten entry age suggests that age alone shouldn’t be a major factor in predicting how a child will do in school. A child’s individual abilities, behavior, and experiences matter too.
Being Academically Ready Isn’t the Same as Being Ready for Kindergarten
During my 11 years as a school social worker, I worked with a handful of kindergarten students who had entered school through early-entrance options.
What stood out to me wasn’t academics.
Academically, many of these children could keep up.
It was the social, emotional, and physical demands of the kindergarten day that were difficult.
I saw children who became exhausted much earlier than their peers, struggled to keep up socially, needed significantly more adult support to regulate, or reverted to younger self-soothing behaviors, like sucking their thumb, when the day became overwhelming.
Of course, this was my experience with a small number of children and doesn’t mean every child who enters kindergarten early will struggle.
But it reinforced something I saw again and again throughout my career: kindergarten readiness is about much more than academics.
The American Academy of Pediatrics takes a similarly broad view of school readiness. It includes social-emotional development, self-regulation, attention, impulse control, cooperation, communication, physical development, language and literacy, and a child’s approach to learning.
So instead of only asking:
“Can my child do the academic work?”
I also want parents to ask:
“How prepared is my child for the demands of a kindergarten day?”
If Your Child Has a Summer Birthday, Look Beyond Academics
If your child’s birthday falls close to the cutoff, I wouldn’t make the decision based solely on whether they know their letters, can write their name, or are beginning to read.
Instead, look at how your child functions throughout their day.
Can they participate in a group?
Can your child sit and attend to a story or short lesson in a group setting? Can they follow simple multi-step directions and begin to manage impulses, like waiting to speak or stopping their body when asked?
Also consider how they do with slower-paced activities. Kindergarten isn’t always fast-moving or highly stimulating. There will be times when they’re expected to listen to a story, participate in a lesson, complete an activity, or wait while other children finish.
They don’t need to sit perfectly still, follow every direction the first time, or maintain attention for long stretches. But can they generally participate and stay engaged with developmentally appropriate support?
Can they separate from you and recover?
Some tears at separation are completely normal, even for children who are ready for kindergarten.
The more important question is what happens afterward.
Can your child separate from you and eventually settle with support from another trusted adult? Or does separation regularly interfere with their ability to participate for a significant portion of the day?
How much help do they need to regulate their emotions?
Children are still developing emotional regulation skills at this age, so we don’t expect them to manage every emotion independently.
Instead, think about what happens when your child is frustrated, disappointed, told no, asked to wait, or faced with something difficult. Are they beginning to recover and move forward with support?
Can they engage in age-appropriate play with other children?
Look at how your child navigates play. Can they participate alongside or with other children, take turns with support, communicate during play, and begin working through small conflicts?
They don’t need to be a social butterfly or have a huge group of friends. You’re looking at their ability to participate in the social environment of a classroom.
Can they communicate their needs?
Can your child let an adult know when they need help, need to use the bathroom, aren’t feeling well, don’t understand something, or have a problem?
The American Academy of Pediatrics recommends considering these kinds of social, emotional, behavioral, communication, and physical skills alongside early academics when thinking about school readiness.
And remember: none of these skills need to be perfect.
You’re looking at the whole child, not checking off a list of kindergarten prerequisites.
Don’t Let Someone Else’s Timeline Make the Decision for You
This is where things can get hard.
Your child’s friends may all be starting kindergarten.
You may worry that they’ll be “behind” if you give them another year.
And another year of preschool or childcare can be expensive. That’s a legitimate consideration for families.
But whether another child is starting kindergarten doesn’t tell you whether your child should.
Children with birthdays only a few weeks apart can have very different developmental strengths and needs.
Being one of the youngest children in the class isn’t automatically a reason to delay kindergarten. Research has found that while older kindergarteners may have an academic advantage early on, those differences can diminish as children move through elementary school.
The goal isn’t to make sure your child starts kindergarten as early as possible or as late as possible.
It’s to make an informed decision based on the child in front of you.
What About Starting Kindergarten and Repeating It If Needed?
Sometimes parents think, “We’ll send them, and if they’re not ready, they can always repeat kindergarten.”
I wouldn’t recommend going into kindergarten with retention as your backup plan.
Repeating a grade is a separate educational decision that should be made carefully with your child’s school team based on the individual child’s needs. It’s not quite the same thing as choosing when an eligible child should begin kindergarten in the first place.
If you’re questioning whether your child is ready now, it’s worth having those conversations before the first day rather than assuming you’ll simply make the decision again at the end of the year.
You Don’t Have to Make This Decision Alone
If you’re truly on the fence, gather information from the people who know your child in different environments.
Start with your child’s preschool or pre-K teacher. They have the unique advantage of seeing your child in a group of same-age peers. Ask about attention, independence, emotional regulation, communication, play, and how much adult support your child typically needs throughout the day.
You can also talk with your child’s pediatrician about their overall development. The American Academy of Pediatrics specifically recommends talking with both a child’s pediatrician and preschool teacher or childcare provider when parents have questions about kindergarten readiness.
And talk to the school or district your child will attend. Ask about kindergarten expectations, the length and structure of the school day, cutoff policies, early entrance requirements, and what options are available for children with birthdays close to the cutoff.
Then bring all of that information back to what you know about your child.
There Isn’t One Right Answer for Every Summer-Birthday Child
Some young five-year-olds walk into kindergarten and thrive.
Some children may benefit from another year before starting.
And knowing the alphabet isn’t going to tell you which child you have.
Look at their emotional regulation, independence, communication, ability to participate in a group, stamina, play skills, and overall development.
But also remember that readiness isn’t entirely your child’s responsibility. Children enter kindergarten at different developmental levels, and schools have a responsibility to support those differences, too.
Kindergarten readiness isn’t about making sure your child is ahead before they start.
It’s about looking at the whole child, considering their individual strengths and needs, and making the decision that makes the most sense for your child and family.
Sources:
American Academy of Pediatrics. “School Readiness.” Pediatrics, 2019. American Academy of Pediatrics: School Readiness
American Academy of Pediatrics / HealthyChildren.org. “Is Your Preschooler Ready for Kindergarten?” Updated 2025. HealthyChildren: Is Your Preschooler Ready for Kindergarten?
NICHD Early Child Care Research Network. “Age of Entry to Kindergarten and Children’s Academic Achievement and Socioemotional Development.” Early Education and Development, 2007. PubMed: Age of Entry to Kindergarten Study
