It's not that simple:

https://archive.ph/wyFT0

>This year the federal government reimbursed most schools between 77 cents and $4.58 per lunch meal

>[...]

>“You’re wasting white milk and money,” wrote Ben, who identified himself as a fourth grader. “Another reason you should bring back chocolate milk is because students are super MAD.”

Anyone who has ever bought a lunch knows that you can't get something that's healthy and tastes decent for $4.58. Then there's another wrench thrown in the system by insisting on using fresh ingredients like Gordon Ramsey is watching, which forces deeper cuts on everything else. Some public health officials seem to be chasing a mirage of the artisan school chef who forages for edible clover on the school grounds. The result is that students are handed the cheapest apple money can buy and most of them throw it away.

I could actually put together a lot of healthy great tasting meals for $4.50 a serving when cooking for 100s of students at a time. At $0.77, probably not.