This study offers theoretical and empirical evidence of the impact a research training program in teaching reading and writing had on a group of 30 teachers whose professional training is in disciplines other than education. The teaching practices of the selected teachers were observed during a period of 18 months. The study identified a change in concept and educational practices with respect to teaching and learning, and the extent to which the professionals in question appropriated the training they received, in terms of declarative knowledge and exercise of their teaching skills.