I agree that kids might have a hard time deciding what they want to learn, but it sounds like this approach is less "learn whatever is interesting to you" and more "let's pick some topics together and go from there."

And I disagree that "cafeteria services" is ludicrous. Think of how many things go into planning and preparing meals in the cafeteria. There's the cooking, serving, staffing, ordering, combining, purchasing, and planning. Math goes into estimating how much of each thing to buy, food safety and biological processes can be taught in the context of how long food can be kept safely. Communication goes into creating the menu, and also in the ordering processes. A persuasive essay on cafeteria food selection could be part of the work.