This article aims to explore the question of education in Plato from the historical context, thinking the model of Athens, Lesbos and Sparta, and from the perspective where a bad paideía, the low quality in the formation of citizens, becomes the main cause generating social disruption. Then, a reflection was made on the educational possibilities that Athenians from different social classes would have and on the Platonic proposal based on the combination of gymnastics and music, so that a citizen profile (...) with solid collective ideals would be developed to the point of avoiding stásis. DRAFT TRANSLATION!!! Original pagination will be indicated in brackets, e.g. [p. 104]. Portuguese published version: Carvalhar, C. (2020). A má educação como a principal causa da ruptura social. Revista Enunciação, 5(1), p. 102-117. (shrink)