The article presents the main results of the study, “Origin, expectations and labour education project of young students at Technical Training Centres”2. The research consisted in the application of a structured instrument to a sample of 901 students in their first or second semester of technical training at 23 TTCs in the Metropolitan Region. The main objective of this study was to characterize the profile and trajectory of students in this training system as well as discover their interests and personal motivations.The main outcomes show the enrolment heterogeneity of this training system, the presence of students with previous work and/or educational experience, as well as a weak link between mid-level technical training and higher-level supply.