One cannot speak of schools without immediately thinking of textbooks. They have become central in the lives of schools of all levels and kinds because they perform various functions: they offer a selection of the pieces of knowledge that is worth transmitting; they help teaching and learning on the side of instructors and students; they ensure relations with disciplinary research. For this reason, today multiple interests—didactic, economic, disciplinary, and scientific—are focused on textbooks. One question that should be crucial when writing and choosing a textbook has however been placed on the backburner: Is the textbook capable of contributing to the formation of a critical citizen?