This work shows the result of a research with Portuguese Language students of Federal University of Juiz de Fora (MG) that analysed their understanding about academic genres written in supervised internship of Portuguese Language in last period of full time course in 2014. We understand that the student’s insertion in written practices of academic genres is an important socialization process. Methodologically, we used open questionnaire applied at the end of the period when the students wrote their texts, after writing – rewriting – reflection about written. The data show us that a) a minority of students is immersed in academic written practice during the Portuguese Language undergraduation; b) the students face up difficulties in writing not detected along the course; c) there is more student’s engagement in the written of paper and reports in circulation context.