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Standards

Fighting to End Food Waste

Courtesy of BCK Programs/San Marcos Elementary

Students from San Marcos Elementary (from left): Melanie Martinez, Jaeleen Lopez, Damian Martinez, Diego Monroy

It’s lunchtime at San Marcos Elementary School in California. When students finish eating, they carefully sort their trash. Half-eaten apples go into a special container for food scraps. Empty milk cartons go into the recycling bin. And chip bags and granola bar wrappers get tossed into the regular trash. 

It’s part of a program started last year by teacher Melissa Cuevas’s fifth-grade class. They set up a sorting station in the cafeteria with separate bins for compost, recyclables, and regular garbage. The food in the compost bin will eventually be turned into a natural fertilizer that helps plants grow. The students have already saved thousands of pounds of food and recyclables from ending up in landfills.

The Rotten Truth About Food Waste
Watch a video to find out what happens when food goes to waste.

Tracking Trash

The idea for the program took shape in October 2024. That’s when an environmental group called BCK Programs visited Cuevas’s class, teaching the kids about the nation’s trash pileup. Across the U.S., about 146 million tons of waste ends up in landfills each year. That’s enough to fill 8 million garbage trucks! About one-quarter of that is food waste.

As food scraps rot, they releases a gas called methane, which traps some of the sun’s heat in Earth’s atmosphere. Many scientists say too much methane has contributed to the planet’s warming over time. 

The kids were determined to reduce the amount of waste their school sends to landfills. They analyzed one day’s worth of trash from the cafeteria, which totaled 182 pounds. Only 10 pounds of it turned out to be actual trash. The rest could’ve been recycled, reused, or composted.

Next the students worked with BCK Programs to set up the three-bin sorting station in the cafeteria. San Marcos Elementary School is now on track to divert about 31,000 pounds of trash from landfills each year. 

“We made a difference,” says 12-year-old Diego Monroy. “Other schools could do the same thing.”

Courtesy of BCK Programs/San Marcos Elementary

This is just some of the food waste the students tracked in one day.

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