The aim of this study is to give insight into the word class nouns presented in the first level of the graded readers series Vamos a leer and the textbook Gracias 8, both teaching materials aimed at the secondary school in Sweden. More precisely, the following questions have been considered: (i) To what extent is the selection of nouns in the texts based on frequency criteria? (ii) To what degree does the noun occur enough times to gain knowledge of the word through incidental learning? (iii) Is there any difference between the graded readers and the textbook in terms of frequency and repetition of the nouns? To answer these questions, a corpus with all occurring nouns based on the texts of the two teaching materials has been compiled. The analyses show that regardless of the teaching material, the selection of nouns is partially based on frequency criteria, but also that there are insufficient repetitions to ensure that incidental learning through reading occur.