system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: why are (public) school breakfast/lunches (k-12) typically not freshly cooked and not very healthy in america?

Would it really cost so much to provide freshly cooked lunches/breakfast that it is not possible to do so? 

Edit: i know not *all* public schools in the us have crappy food (hence the word typically). A good chunk of them do, though i know that there are districts (typically in more affluent areas) for which this is not an issue.
gpt
* Ease of preparation - most school districts have many schools, and coordinating daily deliveries of multiple fresh ingredients to all of them is tough.  They focus their energy on classroom activities.
* Cost.
* Inertia - it's a bunch of work to change something like that, and that means someone has to stop what they are working on and manage that change process.  If it means bringing in a private company, the current food services people lose their jobs.
* When schools sell healthy and not healthy food side-by-side, kids almost always buy the not-healthy.

Edit: formatting bullet points.