It was all bad except for the pizza... I think the worst meal was the fish sticks.
With all the money spent on public schools, why does the food suck?
My son tells me they've taken away the salt packets, and the sweet tea.
It's proof of something... Maybe they hate the kids, maybe they can't do any better, who knows?
It sucks for the same reason food in prisons suck: high volume of consumers and incentive to find the cheapest contractor capable of meeting the bare minimum of nutritional standards. The former problem is not solvable; if you have to feed hundreds, if not thousands, of people at the same time at multiple intervals a day, then quality will suffer as a result. The latter is all an effort to save the taxpayer money and demonstrate that these public institutions are good stewards of the tax payers' money. I can't speak for the inmates, but I can tell you everyone wants better food, books, sports, etc., for their children, until they are asked to actually pay for it. We live in a time where $784 million stealth bombers flying over football stadiums and teachers being forced to write off colored pencils as a tax expense is considered par for course. This is the natural result.
As it currently stands, the number of contractors who handle serving food in large-scale public institutions (e.g. schools, prisons) are few, and the same people who manage food services at your local jail also serve your local middle school. Do with that what you will.
As for the OP's question, for me it has to be the fish sticks. Nasty and served with cauliflower and other vile filth. I grew up poor, so I was a free hot lunch kid and very rarely had any packed lunches. But some of the food was good. Especially those meals where the lunch staff put in the extra effort. Pepperoni roll day was always a real treat, and the staff was friendly and did what they could with what they had. My fellow West Virginians already know how beloved pepperoni rolls are, and the ones served at school lunch were made with love.