Do Kids Start Kindergarten Too Early?

Fight disinformation: Sign up for the free Mother Jones Daily newsletter and follow the news that matters.


Tyler Cowen points us today to an interesting new study about kindergarten. It’s from Denmark, as is so often the case, since the Danes keep very detailed records on their children.

In Denmark, it turns out, kids enter kindergarten in August of the year they turn six. So consider two kids. The first turns 6 on December 31, which means she was about 5½ when she started kindergarten. The second turns six on January 1, which means she has to wait until the following August, when she’s about 6½. There’s a one-year difference between entering kindergarten even though they’re essentially the same age. So how do they do?

The authors find that on a wide range of measures—peer problems, emotional problems, socialization, etc.—the 5½-year-old kid does a little bit worse. However, on the inattention/hyperactivity score, the 5½-year-old kid does a lot worse. There’s a large discontinuity at January 1, which suggests that the one-year difference in entering kindergarten makes a big difference.

Cowen comments, “I have not yet read the study, but it seems to me this paper, along with some other recent results, does not exactly help the case for preschool…” That may be true, but there are two pretty important caveats to keep in mind:

First, there’s no way to tell if the older kids benefit because (a) they’re older in absolute terms, or (b) they’re older than most of their classmates. The authors claim that “our pattern of results speaks indirectly to the empirical salience of absolute and relative-age mechanisms,” but that’s a stretch. In the discussion section at the tail end of the paper they briefly say that their findings “are consistent” with an absolute-age mechanism, but that’s it. There’s nothing in the actual body of the paper that addresses this in any way.

Second, nearly all Danish children attend nurseries and public daycare starting at age one. So even if it turns out there’s evidence for an absolute age mechanism, it may only be something specific to the curriculum of kindergarten, not to early schooling in general.

So it’s an intriguing paper, but it’s not at all clear that it tells us much about the benefits of early daycare/preschool. The authors are keen on a theory that young children benefit from pretend play, and they suggest that kindergarten at age five cuts this period of pretend play too short. That could be, but again, this mostly just argues for delaying the start of structured learning, not against the idea of early preschool. More research, please.

FOLLOW THE MONEY

Corporations and billionaires don’t fund journalism like ours that exists to shake things up. Instead, support from readers allows Mother Jones to call it like it is without fear, favor, or false equivalence.

And right now, a longtime friend of Mother Jones has pledged an incredibly generous gift to inspire—and double—giving from online readers. That's huge! Because you can see that our fall fundraising drive is well behind the $325,000 we need to raise. So if you agree that in-depth, fiercely independent journalism matters right now, please support our work and help us raise the money it takes to keep Mother Jones charging hard. Your gift, and all online donations up to $94,000 total, will be matched and go twice as far—but only until the November 9 deadline.

$400,000 to go: Please help us pick up the pace!

payment methods

FOLLOW THE MONEY

Corporations and billionaires don’t fund journalism like ours that exists to shake things up. Instead, support from readers allows Mother Jones to call it like it is without fear, favor, or false equivalence.

And right now, a longtime friend of Mother Jones has pledged an incredibly generous gift to inspire—and double—giving from online readers. That's huge! Because you can see that our fall fundraising drive is well behind the $325,000 we need to raise. So if you agree that in-depth, fiercely independent journalism matters right now, please support our work and help us raise the money it takes to keep Mother Jones charging hard. Your gift, and all online donations up $94,000 total, will be matched and go twice as far—but only until the November 9 deadline.

$400,000 to go: Please help us pick up the pace!

payment methods

We Recommend

Latest

Sign up for our free newsletter

Subscribe to the Mother Jones Daily to have our top stories delivered directly to your inbox.

Get our award-winning magazine

Save big on a full year of investigations, ideas, and insights.

Subscribe

Support our journalism

Help Mother Jones' reporters dig deep with a tax-deductible donation.

Donate