Students who rely on government meals distributed by the Hillsborough County School District were forced to go without this week after “greedy” scammers collected food from multiple schools to sell online.

Superintendent Addison Davis told WFLA at least 50 cars visited several of the district’s 147 food distribution sites on Wednesday to hoard food meant to feed needy students. The food – a pound of lunch meat, loaf of bread, milk, juice and snacks – was available to any parent at any of the sites once a week, but district officials are now revising policies after finding out folks were selling it online.

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“It’s a shame some of our constituents were coming through the line at multiple schools and taking away food from children in need,” Davis said, adding that officials were forced to turn folks away on Wednesday because of the scam.

WFLA reports a total of 47 cars were turned away from pick-up sites because they already had school food in the vehicle. The news site discovered several posts advertising the food for sale on social media.

“We had some individuals who made undesired behaviors last week,” Davis said, “but we stand ready with new organizational controls and hats off to the IT and operations department for helping us with this process.”

The new rules will require parents to provide their child’s name and school ID number to ensure each family only receives one order, officials said.

“We want to make sure that children actually get the nutrition they need to be successful during the e learning process,” Davis said. “My job as superintendent of schools is to take care of every one of our students every single day.”

The fraud comes as the federal government pumps millions into the National School Lunch Program as part of stimulus funding meant to help schools and families survive the coronavirus pandemic.

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In many places, schools have expanded the program to cover breakfast, lunch and dinner, or expanded the number of meals or pick-up locations offered. Meanwhile, local businesses are also chipping in with free meals to help feed millions of students who are forced to learn from home amid the nationwide lockdown.

The effort has helped to keep school workers employed, but it’s also posed challenges as food staff in some places have contracted coronavirus and forced schools to halt food programs, USA Today reports.

In other places, only a fraction of students eligible to receive the government meals are actually showing up to get them. In Miami, school officials are producing public service announcements to encourage more to participate as only about 20 percent of eligible families take advantage of the giveaway, CBS Miami reports.

“Teachers know that students can’t learn when they are hungry,” said Karla Hernandez Mats, president of United Teachers of Dade union, told the news site. “What we’re seeing is that although the district is putting information out. And yes they have served over a million meals, and they are doing a great job of providing these resources, we just don’t feel that enough communities know or have access because they don’t have the information.”