Your students really are fortunate to have such good food. When my step-son attended the village école and, later, the collège in the neighbouring village the food was not at all good. It was delivered every day by a catering firm and consisted of the same meals supplied to the all the local maisons de retraite. You can imagine the consistency of most of it to enable it to be suitable for the elderly! My step-son used to mostly eat the bread, the salad and the dessert.
His Maman, who worked at the maison de retraite, at least knew what he had been offered for lunch every day and would know how hungry he would be when he got home!
I wonder who decides how meals are provided at schools etc?