Emily Oster

7 min Read Emily Oster

Emily Oster

COVID-19, Learning Loss and Inequality

The urgent need to reopen schools

Emily Oster

7 min Read

This graph has been on my mind a lot. It comes from work done by one of my colleagues, John Friedman, and his coauthors at Opportunity Insights. John and his collaborators are, in my view, doing among the most important social science work active today. This is no exception.

Before I tell you what I think this means, and why it’s so important, it’s useful to talk through what, exactly, is in this graph.

The team at Opportunity Insights is looking to evaluate the impact of the COVID-19 pandemic on the economy. This includes impacts on things like stores and restaurants, but also impacts on parts of the economy like education. Their key contribution in most of these areas is creative use of data to see what has gone on in the wake of the disease.

When they turned to look at educational progress, they relied on data from Zearn. If you are a regular reader of this newsletter, you may recall I suggested this as a homeschool resource and, indeed, my kids have been using and liking it. But Zearn is also used in many school districts; it’s linked up to the Eureka math curriculum.

What the Opportunity Insights team did is take data from classrooms that were using Zearn before the shutdown for math instruction. They relied on data about “Badges” earned — basically, a metric of completion of lessons in the program — and looked at how the number of badges earned changed over time after schools shut down.

This is what they are showing in the graph above. The vertical axis is the percent change. A 50% reduction (that’s -50% on the axis) means half as many badges earned relative to the baseline, pre-pandemic period. Importantly: the graph separates out schools in higher income areas (the top line) from those in middle and lower income areas (the bottom two lines). Each group represents about a third of schools. (These are based on area-level income, not individual student income, although higher income areas have, on average, higher income students).

What might we hope to see here? If online learning was basically just as productive as in-school learning, we wouldn’t expect to see a reduction in badges earned. The line would just be flat around zero.

This does not seem to be the case at all. Even for students in the best off districts — the higher income ones — there is a reduction of about 10% in the badges earned and this seems to get even worse in the most recent weeks. For students in middle and lower income school districts, the results are a disaster. There appears to be about a 60% drop in badges earned. That is, kids in these districts are moving through the curriculum at less than half the pace they did while in school.

For a week or two, that might be a surmountable slowdown. But this is consistent over the entire period. It’s a third of the school year. If kids learn half as much math for that third of a year, they will be months behind when the next grade rolls around.

This is only one piece of data. Perhaps you are thinking that in moving to distance learning school districts stopped using Zearn and switched to some other math option. In this case, these data might overstate the losses. This is of course, possible. To me, it seems unlikely. Math instruction which is already online seems among the easiest things to transition. If anything, I would think that these numbers understate learning loss, since many other classroom lessons — social studies, for example — may be more difficult to do well remotely.

Why is this on my mind? In a sense, it brings together for me the two crises we are facing right now.

There is a lot of talk of reopening schools in the fall — should we do it, is it dangerous, how should it happen. There are no easy answers. I have been accused, I think correctly, of being more gung-ho to open than many in public health.

What we all should acknowledge is that opening schools is not without very significant risks. We do not yet understand well how school opening will impact the virus. I hope we will know more as schools in Europe continue to open, and as camps and day cares do in the US. But there is no question we will go into the fall without certainty, and also no question that when we do open some people will get sick.

But what these graphs show me is that keeping schools closed is also not without very significant risks. The current cohort of kids has already experienced learning loss. Now imagine you keep schools closed for another year. That is a full year in which some schools see students learning less than half the math they should learn. There is every reason to believe, based on what we know from other data, that these kids will be less likely to complete high school, go to college, get good jobs and earn a living wage. They will be more likely to die sooner.

And it’s not all kids. Or, at least the burden is disproportionate. Richer kids in richer school districts will do better. Even if their schools are doing a bad job on distance learning, their parents are more likely to fill in. My kid’s school isn’t pushing them through Zearn fast enough? No problem, I’ll sign them up on my own. The already very stark educational inequality will get starker.

This is where this intersects, also, with race. The graph below has the same structure as the one above, but now separates schools by the racial composition rather than income. Schools in which the majority of students are Black or Hispanic have more learning loss than those who are majority white. The difference for majority Black schools is very large.

Race and income do not always go hand-in-hand. And one of the many important points that have been made recently is the point that racism is just that — discrimination based on race. Black men and women are treated differently because of skin color, be it by police or by others. Being a chaired Harvard professor does not change this.

But it is nevertheless true that Black children are more likely than white children to grow up in lower income families and neighborhoods. When we see inequality in education by income levels, by school resources, these inequalities translate to racial inequalities.

So when we ask: “Which are those children who are going to be left behind if we do not open schools?”, the answer will come back that they are disproportionately not just low income but also Black and Hispanic.

The conversation doesn’t stop there. COVID-19 rates are also higher for people of color. The burden of closed schools is higher, and so is the disease burden. How do we trade this off? There are no easy answers.

What these Opportunity Insights graphs tell me is that we have to find a way to improve learning outcomes and, realistically, I think this means we have to find a way to open schools. And yet we need to do it safely. I do not want to be a broken record, but it is a travesty that we are not collecting more data to understand how child care is spreading the virus. We must do this. It is simply not fair to children not to.

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Happy fall, everyone! What parenting moments do you look forward to (or dread) when the season changes? Let me know in the comments 🍂

#daylightsavings #parentingtips #parentinghumor #fallactivities #emilyoster

Happy fall, everyone! What parenting moments do you look forward to (or dread) when the season changes? Let me know in the comments 🍂

#daylightsavings #parentingtips #parentinghumor #fallactivities #emilyoster
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Curious about the role of midwives in childbirth? Today on the ParentData Podcast, we have Ann Ledbetter help us dive into all things midwives—exploring their unique approaches, the impact on birth outcomes, and what makes midwife care distinct.

Listen to this episode now and subscribe to ParentData with Emily Oster in your favorite podcast app 🎧

#parentdata #parentdatapodcast #midwives #midwifery #epidural #emilyoster

Curious about the role of midwives in childbirth? Today on the ParentData Podcast, we have Ann Ledbetter help us dive into all things midwives—exploring their unique approaches, the impact on birth outcomes, and what makes midwife care distinct.

Listen to this episode now and subscribe to ParentData with Emily Oster in your favorite podcast app 🎧

#parentdata #parentdatapodcast #midwives #midwifery #epidural #emilyoster
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#TheUnexpected gives tools to better understand and help the parents you love. Link in bio to learn more about the book! If you’ve read it, what stuck out most to you? Share in the comments below 💛

#emilyoster #pregnancycomplications #parentingcommunity #parentingsupport

Parenthood isn’t something anyone should navigate alone. It’s about showing up for the moms, dads, and families in your circle—especially when things don’t go as planned. Whether it’s a pregnancy complication or the challenges of postpartum life, we can all play a part in supporting each other.

#TheUnexpected gives tools to better understand and help the parents you love. Link in bio to learn more about the book! If you’ve read it, what stuck out most to you? Share in the comments below 💛

#emilyoster #pregnancycomplications #parentingcommunity #parentingsupport
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#mancold #perceptionvsreality #sickday #staystrong #emilyoster

Do men really get worse colds? Not really, but they definitely think so!

#mancold #perceptionvsreality #sickday #staystrong #emilyoster
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 A little soap or mold from toys isn’t harmful, and diluted pee is no big deal. Eating a lot of poop can make you sick, but in small amounts, it isn’t toxic.

Bottom line: Bathwater isn’t your kid’s best drink option, but don’t stress too much! Just keep an eye on them during bathtime for safety. 

#kidsbathtime #bathtoys #bathtimefuntime #emilyoster #parentdata

💧 Is your kid drinking bathwater? Here’s the 411: It’s gross but not dangerous! Comment “Link” for my full guide to bathtime.

A little soap or mold from toys isn’t harmful, and diluted pee is no big deal. Eating a lot of poop can make you sick, but in small amounts, it isn’t toxic.

Bottom line: Bathwater isn’t your kid’s best drink option, but don’t stress too much! Just keep an eye on them during bathtime for safety.

#kidsbathtime #bathtoys #bathtimefuntime #emilyoster #parentdata
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A study shows just how deep the gender divide runs when it comes to household labor—even in something as simple as a phone call. Does this ring true for you? Share your experience in the comments 👇

#gendergap #momstruggles #parentsupport #emilyoster #parentdata

Why is it that schools always call mom, even when dad’s the one with more availability? Comment “Link” to dive into the data on inequality in parental workloads.

A study shows just how deep the gender divide runs when it comes to household labor—even in something as simple as a phone call. Does this ring true for you? Share your experience in the comments 👇

#gendergap #momstruggles #parentsupport #emilyoster #parentdata
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#childsleep #childhooddevelopment #parentingtips #emilyoster #parentdata

Is your child getting enough sleep? 💤 Kids need 9-11 hours of rest for better focus, behavior, and health. Comment “Link” for an article on the importance of sleep and how to help your kids get more of it. It’s time to make sleep a priority!

#childsleep #childhooddevelopment #parentingtips #emilyoster #parentdata
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Share this with a mom you think is doing great!

#parentdata #emilyoster #motherhood #barbiemovie

Here’s my rant on motherhood inspired by the Barbie movie. Motherhood is hard enough without the unsolicited expectations we’re constantly assigned. As I always say, there is no secret option c. You’re doing great, and I hope you know that!

Share this with a mom you think is doing great!

#parentdata #emilyoster #motherhood #barbiemovie
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What’s the most recent panic headline you’ve seen? Drop it in the comments and let’s break it down together! ⬇️

#parentdata #emilyoster #panicheadline #datadriven #riskmanagement #parentingstruggles

Ever seen a headline that makes your heart race, but when you dig deeper, the study behind it doesn’t hold up? That’s a panic headline! It’s designed to grab attention and spark fear, but the research it’s based on is often weak or irrelevant. Next time you see one, take a breath, look closer, and don’t let sensationalism get you stressed out.

What’s the most recent panic headline you’ve seen? Drop it in the comments and let’s break it down together! ⬇️

#parentdata #emilyoster #panicheadline #datadriven #riskmanagement #parentingstruggles
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Listen to this episode now and subscribe to ParentData with Emily Oster in your favorite podcast app 🎧

#parentdata #parentdatapodcast #theanxiousgeneration #kidsmentalhealth #screentime #jonathanhaidt #emilyoster

Is constant phone access impacting your child’s development? 📵 Today on the ParentData podcast, listen to @profemilyoster and @jonathanhaidt discuss the impact of phones and social media on learning and child mental health.

Listen to this episode now and subscribe to ParentData with Emily Oster in your favorite podcast app 🎧

#parentdata #parentdatapodcast #theanxiousgeneration #kidsmentalhealth #screentime #jonathanhaidt #emilyoster
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This is a sneak peek from the Saturday newsletter on ParentData. Want more parenting tips and insights? Subscribe now at the link in bio.

#parentdata #emilyoster #parentingadvice #parentingtips #parentingquotes #parentingishard

Here’s your Monday reminder for the start of the school year: You’re doing a great job, rice bunnies or not!

This is a sneak peek from the Saturday newsletter on ParentData. Want more parenting tips and insights? Subscribe now at the link in bio.

#parentdata #emilyoster #parentingadvice #parentingtips #parentingquotes #parentingishard
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This graph shows how reflux changes with age. Nearly half of all babies experience reflux by 3 months, often peaking around 4 months before improving by their first birthday. And remember, if you’re struggling, you’re not alone. The most effective treatment for infant reflux is time. It will get better!

#parentdata #refluxbaby #babyreflux #spitup #parentingadvice #emilyoster

Reflux: It’s more common than you think! Comment “Link” for an article by @thepediatricianmom breaking down the information we have about reflux — what it is, what you can do, and red flags to look out for.

This graph shows how reflux changes with age. Nearly half of all babies experience reflux by 3 months, often peaking around 4 months before improving by their first birthday. And remember, if you’re struggling, you’re not alone. The most effective treatment for infant reflux is time. It will get better!

#parentdata #refluxbaby #babyreflux #spitup #parentingadvice #emilyoster
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Here are some things to keep in mind:
🚽 It takes longer than three days (based on the data!)
🚽 Your child will have trouble staying dry at night.
🚽 Poop sometimes comes later than pee – this is common, you just have to work through it.

Comment “Link” for an article that breaks down potty training data from ParentData readers,  along with helpful tips and tricks.

#pottytraining #pottytrainingtips #pottytrainingproblems #parentdata #emilyoster

We’re heading into a three-day weekend, which means a lot of you might take the opportunity to do some potty training.

Here are some things to keep in mind:
🚽 It takes longer than three days (based on the data!)
🚽 Your child will have trouble staying dry at night.
🚽 Poop sometimes comes later than pee – this is common, you just have to work through it.

Comment “Link” for an article that breaks down potty training data from ParentData readers, along with helpful tips and tricks.

#pottytraining #pottytrainingtips #pottytrainingproblems #parentdata #emilyoster
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Here’s a visualisation based on the paper, showing the injury rate by area. Beware the foam pit and the high-performance areas! Slam-dunking, though, seems fine.

#parentdata #emilyoster #trampolinepark #childsafety #trampolinefun

Trampoline parks: great way to get the sillies out or injury haven? Or both? Comment “Link” for an article breaking down a 2023 study on injury trends in trampoline parks.

Here’s a visualisation based on the paper, showing the injury rate by area. Beware the foam pit and the high-performance areas! Slam-dunking, though, seems fine.

#parentdata #emilyoster #trampolinepark #childsafety #trampolinefun
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I’m teaming up with @Wholefoods to remind you that even though school lunches can be tricky, they have everything you need, from conventional to organic, to give you peace of mind about the foods your kids eat. Through their rigorous Quality Standards, they ban 300+ ingredients from food. 

Does your kid have any special or weird lunch requests? Share in the comments! Tap the link in my bio for more tips and inspiration #WholeFoodsMarket

I’m teaming up with @Wholefoods to remind you that even though school lunches can be tricky, they have everything you need, from conventional to organic, to give you peace of mind about the foods your kids eat. Through their rigorous Quality Standards, they ban 300+ ingredients from food.

Does your kid have any special or weird lunch requests? Share in the comments! Tap the link in my bio for more tips and inspiration #WholeFoodsMarket
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#travelwithkids #jetlag #melatonin #parentingtips #parentdata #emilyoster

Travel is already stressful. Add kids to the equation, and it becomes even more complicated. Here are 3 tips and considerations for handling jet lag in kids.

#travelwithkids #jetlag #melatonin #parentingtips #parentdata #emilyoster
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