What Should a Three-Year-Old Know? Less of What You’re Googling, More of What You’re Skipping
The conversations I have with parents of three-year-olds have started to rhyme.
A mother is touring academic preschools, comparing phonics programs, and her daughter cannot lose a game of Candy Land without a thirty-minute collapse. A father is proud that his son can navigate a tablet, find his shows, skip the ads, and the boy is three and still being fed with a spoon. Nobody in these conversations is a bad parent. They are doing what the culture around them says a good parent does, which is to worry about the things that look like achievement. And they are, almost every time, worried about the wrong things.
If you searched the question in the title, I know what you found. Lists. Knows four colors, counts to ten, stacks eight blocks, speaks in five-word sentences, recognizes half the alphabet. I wrote one of those lists myself, years ago, on this exact page. It ranked well. It also answered the wrong question.
The milestones aren’t wrong. They’re roughly right, and they’re further down. It’s that the question underneath the question, the one a parent is actually asking at eleven at night with a checklist open, is is my kid okay, and am I doing this right. And the list answers that with shapes and colors, which is a little like asking whether a house is sound and being told the paint color.
Here’s what I’d tell you if we were on the couch.
A three-year-old should be doing real things
The most important thing a three-year-old can be learning is how to do the ordinary work of being a person. Getting dressed. Getting shoes on. Putting the blocks back in the bin and the books back on the shelf, badly. Standing on a stool at the counter tearing lettuce, stirring something, carrying the napkins to the table.
None of that is on the milestone lists, because none of it is easy to test, and because it’s slow. It is also, I’d argue, what the three-year-old on the tablet is missing, and it’s not a small gap. A child who can operate a device but not a spoon has learned something about which of his abilities the adults around him find impressive. A three-year-old dressing herself takes four times as long as dressing her, and the shirt will be on backward. But the shirt on backward is the entire point. She is learning, in her body, that she is someone who does things, and that things she does can go wrong and be fixed. Maria Montessori built a whole approach around this a century ago and called it practical life, and she put it first, before letters, before numbers, because she’d noticed that a child who can care for herself and her space brings a different kind of attention to everything else.
I taught teenagers for more than a decade, and I can tell you where this goes. The students who fell apart when something was hard were very rarely the ones who lacked ability. They were the ones who had been so thoroughly done-for that difficulty itself felt like a signal something had gone wrong. That starts at three, with whether we let them struggle with the zipper.
A three-year-old should be learning what she’s feeling
The second thing, and it’s tied to the first, is emotion. Not managing it perfectly; that’s not a three-year-old’s job, and honestly it’s not most adults’. But beginning to recognize it. Beginning to have words for it. Beginning to notice that the wave rises and then, if nobody hands her a screen or a cookie to make it stop, comes down.
The Harvard Center on the Developing Child has a phrase for the set of skills underneath this, the ones that let a person hold a thought, wait, switch gears, filter out the noise. They call it the brain’s air traffic control system, and the point they make that I wish every parent heard is that children are not born with it. They’re born with the potential for it, and it gets built or undermined by the quality of the interactions around them. A three-year-old who is allowed to be furious, who has someone nearby naming the fury without fixing it, is building runways.
That is a lot more consequential than knowing the word “triangle.” It is also invisible on a checklist, because the child who is developing it beautifully looks, from the outside, like a child having a meltdown in Target. Which is why the mother touring phonics programs is looking in the wrong direction. Her daughter doesn’t need more letters yet. She needs a hundred small disappointments with someone calm nearby, and the Candy Land losses are not the obstacle to her education. They are the curriculum.
And yes, the academic stuff
I want to be careful here, because there’s a version of this essay that swings too far and tells you letters don’t matter at three. That’s not what I think, and it’s not what I saw.
Many three-year-olds are ready for more than we give them. Early literacy and early number sense are real and they matter and a child who is interested in letters at three should be swimming in them. What I’d push back on is the idea that these things arrive through instruction at this age. They mostly don’t. They arrive through two things that are almost embarrassingly simple.
The first is being read to, constantly, more than feels reasonable. A team led by Jessica Montag compared the language in a hundred children’s picture books against recordings of parents talking to their kids, and the books contained more unique words, book after book, than the same length of ordinary conversation. Which means the child who is read to three times a day is hearing a vocabulary that no amount of talking, however loving, will replicate. Reading aloud isn’t a literacy activity. It’s the literacy activity.
The second is real conversation, in real language. Not baby talk, not quizzing. Talking to your three-year-old about what you’re doing, what she thinks, why the dog is barking, using the words you’d actually use. Three-year-olds understand far more than they can say, and they build the saying out of the hearing. A kid who is talked with, rather than talked at, walks into kindergarten with something no worksheet provides.
The milestones, since you came for them: counting, shapes, letters
Here is the plain version of what most three-year-olds can do, with the caveat that the range is wide and “most” is doing real work in that sentence. They speak in sentences of four or five words and can hold up their end of a short conversation. They can tell you their name and age. They follow a two-step instruction. They know a handful of colors and a few shapes, and can sort by them. Many can count to ten, though counting objects one by one is a different skill and comes later, and a three-year-old who rote-counts to twenty isn’t ahead of one who can hand you exactly three crackers. Letters are the same story: most threes recognize a few, usually the ones in their own name, and some know many more, and neither tells you much about how they’ll read. They can stack a tower of blocks, pour from one container to another, turn pages, wash and dry their hands, walk up stairs alternating feet, and run well enough to play tag. They express big feelings, sometimes spectacularly, and are starting to have words for a few of them.
The things that are actually worth a conversation with your pediatrician are fewer and more basic: a three-year-old who isn’t putting words together into short phrases, who doesn’t make eye contact or show interest in other children, who can’t hold a crayon or stack a few blocks, who has lost skills she used to have. Those are worth raising. Not knowing “oval” is not.
One thing
This week, pick one thing you currently do for your three-year-old and hand it over. Shoes, or the napkins, or pouring her own water from a small pitcher. It will take longer. It will be done worse. Let it be.
Then, at bedtime, read one more book than you planned to.
If the checklist version of parenting has been making you feel behind, you’re not, and you’re not alone in feeling that way. I write every week about what actually matters in the early years; you can find me on Instagram or join the list.
