Abstract
The purpose of this article is to restructure Niklas Luhmann's education system theory in such a way that it becomes possible to easily compare two functional systems. Therefore, I added some propositions to the theory. I replaced "life course" with "ability" as the medium of the theory and "knowledge" with "example" as the form of the theory. Subsequently, I pointed out the contrast between "able" and "unable" as a binary code that applies to its medium, "ability." At the same time, I assumed that selection in the education system is not a type of code but a program. I finally defined the function of the education system as one where people expect to engage in actions that allow them to communicate with others in the future.