Multiply that across the country, and school food waste adds up to an estimated 530,000 tons every year—an alarming amount of uneaten sandwiches, rejected fruit, and unopened snacks.
Here’s how experts recommend packing a school lunch that produces less trash—and stands a better chance of getting eaten.
After a few days, you’ll probably start to notice a pattern. “If you pack based on what actually comes home, not what seems balanced on paper, you can track it each week and adjust over time,” says Lizzie Horvitz, founder and CEO of Finch, a platform that evaluates products for sustainability.
Ask your kid what happened
Seeing what comes home is only half the job. You also need to find out why—and good luck guessing correctly.
Keep the conversation curious, not accusatory. Ask your kid who they sit with, how much time they have to eat, and what their friends bring. Maybe the orange takes too long to peel, or they can’t open one of the containers without help. Maybe their friend brings two sandwiches and shares one every day—in which case, congratulations, you can stop making a sandwich.
“Maybe this isn't the time to have a really balanced, try-new-things meal,” Horvitz says. “Let's save that for meals at home.” That's not an argument for packing nothing but cookies. It means lunch should mostly consist of foods you already know your child will eat; save the experiments for dinner, when you’re there to encourage them.
Choose the food before the lunchbox
Lindsey Schoenfeld, a registered dietitian nutritionist, chef, and co-author of To Your Taste: How to Eat Well and Feel Better for Your Whole Life, suggests starting with the food instead. Ask your kid what they ate all summer and which lunches they loved last year. Then choose containers that fit those foods. The folded half-sandwich that nestled perfectly into one tiny compartment in second grade might not cut it for a middle-schooler.
Reusable containers only reduce waste if you use them over and over, so make cleanup as painless as possible. Many silicone bags and food containers can go straight into the dishwasher—check the manufacturer’s instructions—and you don’t need to scrub them spotless first. “The dishwasher’s job is to make them completely spotless,” Horvitz says.
As a rough starting point, she suggests about half a cup of fruit, or one small piece of whole fruit, for younger elementary-school kids, in addition to a quarter- to half-cup of vegetables and one serving of grains, such as a slice of bread or a 6-inch tortilla. Middle-schoolers might need the higher end of those ranges, while high-schoolers may eat a full cup of produce and two servings of grains.
Find out what time lunch starts
Plenty of parents don’t know what time their kid eats lunch. It's worth checking: Because schools stagger lunch by grade, some are sitting down with their sandwiches at 10:30 a.m.
“It's good to capture these kids when they're hungry and you have something good ready,” she says.
Jessica Randhawa, the chef and recipe developer behind The Forked Spoon, has used vacuum-insulated stainless-steel containers for her son's lunch since preschool. In the morning, she reheats leftovers—vegetables, meat, whatever is in the fridge—and transfers them to the insulated container. In winter, she sends leftover chicken soup, one of his favorites, in a larger container with a handle. A reusable metal spork goes in with it.
Open the lunchbox before the pantry
When a hungry kid walks through the door, take a look inside their lunchbox before handing over a new snack. Schoenfeld does this automatically. “I’m known for saying, ‘Oh, you’re hungry?’” Schoenfeld says. “I just open the lunchbox back up. ‘Look, it’s perfect. It’s ready to go.’”
An individually packaged snack isn’t always an environmental villain. If your kid brings home an unopened package of crackers, it can go straight back into the pantry. “It’s like it never came to school,” Horvitz says.
“If we're assuming a kid is eating everything in their lunchbox, we of course want to stray from individually packaged food,” Horvitz says. But if your child is unpredictable about what they'll eat, a sealed package that comes home isn't necessarily a failure. The best option is to buy in bulk and portion food into reusable containers; after that, a packaged snack that gets eaten another day can be better than loose food that lands in the trash.
Consider a secondhand lunchbox
There's no rule that says a lunchbox has to be new. Click suggests checking Facebook Marketplace, Poshmark, and eBay, where last year's enthusiasm for a particular cartoon character is now available at a discount. “They have every character you can think of,” she says.
“Compostable” packaging usually needs more than a trash can—or even a backyard compost pile. Many products break down only in commercial composting facilities. Yet a 2025 national analysis found that just 18.1% of the sampled U.S. population had access to a curbside or drop-off program that accepted food scraps and at least some forms of compostable packaging. If your local program doesn’t accept these products, they’ll probably end up in a landfill.
Show kids where the trash goes
The most effective tool for cutting lunch waste isn't a product. It might be a field trip.
Many recycling facilities offer free tours, and county extension offices around the country run gardening and composting programs for kids. The point isn’t to make children feel guilty about every granola-bar wrapper. It’s to help them see where their trash ends up—and why small changes matter.
“There's not a magical product that you can order online and have it shipped with two-day shipping that will solve this,” Click says. “It really comes down to healthy daily habits that you build over time.”
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