School meals are not just school meals.
Eating is more than consuming nutrients.
Giving children food that will be good for them tomorrow, might not be the right thing for them today.

I love how teacher Amarida is so over-enthusiastic about his life passion -- and how nobody in the school bats an eye at his antics.
Ichihara Hayato's teacher is almost childlike in his joy about school meals. He dances in his seat in anticipation; his face, no, his *body* shows every emotion he feels while he's eating. Some call Ichihara's acting style pejoratively "over-acting" -- and if you do too, then you probably won't like this film much.

Like all of the great Japanese comedies, the film has an underlying message or two.
For the message Ichihara Hayato sees: "He loves what he loves and celebrates life no matter how much he's laughed at." (https://youtu.be/aOJa8KjDSA4?)

Maybe this film speaks to me more than to other people because I have been working in education in some way or other for the last 20 years, and I hear things that other people wouldn't. I hear a lot about what education should be.
If we take the "school meal" as the metaphor for the education we give to our children -- it's easy to see the parallels, right? -- they say "food for thought" in English and in German they say "das muss ich erst verdauen", if I get a hard/heavy piece of information, I'll have to digest it first.
We give the children "meals" that we think will be beneficial for them later -- which ingredients we choose, how we prepare them and how we present the meal, we should not only think of tomorrow's benefits but also if the children will even eat the meals joyfully. Why are the children who enter schools eager to learn at six years old -- why are most of those children apathetic to learning some years later? It's because we give children school "meals" that might be nutritious but don't give children joy when they consume them.

There was also a very poignant scene where a student tries to voice his opinion on the school meals in front of a whole room of powerful adults -- and not only do they not listen to him, they also laugh at him. The adult who are responsible for the children's well-being are not interested if the children are really happy. So, there's also this layer of meaning I can find in this comedy.

In conclusion, "School Meals Time Graduation" is what Japanese comedy can be when it's at its best -- very funny script, excellent comedic acting (if you like this style) with impeccable timing and a serious message.