Forty three classrooms in School District 93 are participating in the "Stamp Out Hunger" program.
The president of the Mail Carriers Union approached the district to help assemble grocery bags with mail cards.
The hope is when people get their packets in the mail, they'll fill the grocery bag with food to help the Idaho Falls food bank.
At Rocky Mountain Middle School, Mrs. Shoulke's eighth-grade class is taking a break from lessons to lend a hand to mail carriers for the year's biggest food drive.
"We're folding bags and putting them on a piece of paper for the people that need food," said eighth-grader Irene Bercerra.
First-graders to seniors in advanced placement classes will all be participating in the service project.
Guy Bliesner is the health, safety and security coordinator for District 93. He said spring is a perfect time to help.
"Many of our teachers use that break after the ISAT test when you want to do something to unwind from the test, so it works out really well," said Bliesner.
Peer educator Ramona Roberts says a classroom put together 2,000 bundles so far. Roberts said the students feel good about their contribution.
"He says I feel like I'm helping to feed 2,000 families. So they get it and we get excited about that," said Roberts.
"It's a neat opportunity for a lot of kids to be able to be involved in a service project," said Bliesner.
"Some people don't have food and we do, so yeah, I'm making a big difference for this," said Bercerra.
"So when the mailman puts these in your mailbox, please put food in the bag, because it goes to needy families," said Roberts.
The packets will be sent out in the next couple of weeks. Students in District 93 will be putting together 44,000 packets.
Stamp Out Hunger is in its 21st year as a food drive by the National Association of Letter Carriers; it's their largest of the year.