PURPOSE: to analyze the effectiveness of a Written Narratives Promotion Program in a group of third grade students from public Elementary School. METHOD: twenty-one third grade students (14 girls and seven boys), with ages between eight years and seven months and ten years, had their free writing production based on a proposed theme evaluated before and after Written Narratives Promotion Program. The written productions were qualitatively and quantitatively analyzed using the Communicative Competence criteria (Generic, Encyclopedic and Linguistic), and the subjects' performances were classified as Bad, Regular, Good and Excellent, according to their scores. Data were classified and compared between the program's initial and final moments, and were statistically analyzed. RESULTS: a statistically significant increase was observed in the number of subjects that obtained an excellent classification, in the final evaluation. When data were paired: Bad/Regular and Excellent/Good, there was also a statistic significance between initial and final moments, since that the number of subjects within the group Bad/Regular decreased while the number of subjects classified as Excellent/Good increased significantly. CONCLUSIONS: the proposed program was effective, since that the students were highly motivated and produced better and elaborated written narratives regarding the Communicative Skills.