nÃo hà / A presente pesquisa, pertencente à Ãrea da LinguÃstica Textual, tem por objetivo caracterizar o gÃnero redaÃÃo do ENEM sob o ponto de vista da aÃÃo social que envolve o texto, da estrutura composicional textual/discursiva e dos tipos de acordo e tÃcnicas argumentativas da Nova RetÃrica. Para a realizaÃÃo desse objetivo, baseamo-nos na concepÃÃo de gÃnero como aÃÃo social e de comunidade retÃrica (MILLER, 2009 [1984]), nas diretrizes metodolÃgicas de anÃlise de gÃnero (BAZERMAN, 2011a), no protÃtipo da sequÃncia argumentativa e no plano de texto (ADAM, 1999; 2008), nos tipos de acordo e nas tÃcnicas argumentativas (PERELMAN; OLBRECHTS-TYTECA, 2005). Nosso corpus compÃe-se de 100 redaÃÃes do ENEM (2013) de todas as unidades da federaÃÃo, avaliados com a nota 1.000 pelos corretores/avaliadores do ENEM. Essas redaÃÃes foram analisadas em quatro etapas: a) descriÃÃo das condiÃÃes de produÃÃo da redaÃÃo; b) caracterizaÃÃo do gÃnero nos aspectos interno e externo; c) sistematizaÃÃo de dados sobre a estrutura composicional textual/discursiva e d) levantamento dos tipos de acordo e das tÃcnicas de argumentaÃÃo. Nossos dados confirmam que o gÃnero redaÃÃo do ENEM apresenta, em sua caracterizaÃÃo externa, aspectos pertencentes à proposta de hierarquia de sentido de Miller (2009), o gÃnero insere-se como um texto tipificado na situaÃÃo sociodiscursiva, em nosso corpus, a Lei Seca. A caracterizaÃÃo externa tambÃm contempla os aspectos, tais como: a produÃÃo, a circulaÃÃo e a recepÃÃo do gÃnero, mobilizando formas de enunciados padronizados determinados pela circunstÃncia. Jà a caracterizaÃÃo interna, apresenta todas as macroproposiÃÃes do protÃtipo da sequÃncia argumentativa e do plano de texto fixo. Quanto Ãs categorias bakhtinianas, as redaÃÃes demonstraram a unidade do texto na construÃÃo composicional argumentativa, o estilo de escrita formal da lÃngua portuguesa e o conteÃdo temÃtico com um tema direcionado à problemÃtica social. Na anÃlise retÃrica, identificamos as tÃcnicas argumentativas mais recorrentes do tipo de acordo relativo ao real â fato â com argumentos quase-lÃgicos e baseados na estrutura do real, geralmente, de vÃnculo causal. Esses resultados permitem-nos afirmar que o gÃnero redaÃÃo do ENEM apresenta caracterÃsticas peculiares que o diferencia de outros textos de natureza argumentativa. / The goal of this research, that belongs to the area of text linguistics, consists in characterizing the text, production of the National High School Exam (ENEM) as a genre, according to the point of view of the social action that involves the text and its development, the textual/discursive compositional structure and the New Rhetoric and its assumptions about the types according and the argumentative techniques. In order to accomplish this goal, we based this study on the conception of genre as a social action and as an action of rhetorical community (MILLER, 2009 [1984]), as well as on the methodological framework for genre analysis (BAZERMAN, 2011a), on the prototype of the argumentative sequence and on the text plan (ADAM, 1999; 2008), and on the types according and argumentative techniques (PERELMAN; OLBRECHTS-TYTECA, 2005). The corpus is composed by the analysis of one hundred text productions written in 2013 from all the Brazilian states, evaluated the maximum score (1000 marks) by brokers/assessors National High School Exam. These text productions were analysed following four different steps: a) description of the production conditions of the texts; b) characterization of the genre in internal and external aspects; c) systematization of the data about the textual/discursive compositional structure and d) survey of the types according and of the argumentative techniques. The data confirm that the text production of the National High School Exam as a genre has in its external characteristics aspects that pertain to the hierarchy of senses proposed by Miller (2009), which inserts the National High School Exam text production genre as a text that is typified in the sociodiscursive situation, in our corpus, the Drought Law. The external characterization also contemplates aspects such as: genre production, circulation and reception, mobilizing types of standardized enunciations which are determined by circumstances. On the other hand, the internal characterization presents a recurrent in all the macropropositions of the prototype of the argumentative sequence as well as in the text plan. The categories of Bakhtin show the text unit in the argumentative compositional construction, the formal written style of the Portuguese language, and the thematic content with a theme that concerns social problems. In the rhetorical analysis, the more recurrent argumentative techniques are those of the according type related to the real â fact â with arguments that are almost logic and based on the structure of the real, normally of a causal. These results allow us to state that production of National High School Exam has unique characteristics that differentiate it from other argumentative nature of texts.