“…Thus, Gildásio Amado as the director of MEC Secondary Education department, made efforts to regulate this experience in secondary education and, to this end, formulated a list of requirements to the Minister of Education and Culture, which would result on the publication of the «Instructions about the nature and organization of the experimental classes» (Brazil, 1958), legislation which authorized the experimental class facilities into the two secondary education cycles from the school year of 1959 (Amado, 1973). Its item 3 establishes «the experimental class features» determining that, as a matter of priority, they should be implemented in the first secondary education cycle that is, in junior high school; in a reduced number of classes, starting at the first class and, under evaluation could be expanded to the other junior high school classes (Dallabrida, 2014). This legislation established strict control mechanisms for MEC through the need of a previous authorization and «special assistance» of the Secondary School Board and the accreditation of teachers, as well as the «previous consent of parents or the ones responsible for the enrolled students» (Brasil, 1958, p. 80).…”