The practicum is an essential component in the initial training of Secondary Education teachers, as it is the first approach to educational practice that future teachers have. This is a fundamental element for improving the quality of education, as it is one of the objectives of the different educational reforms. This research aims to find out the educational value of the practicum for this group, as well as its advantages and limitations. For this purpose, qualitative research was carried out, using as an instrument an interview with 13 Secondary Education teachers, 2 managers of the master's degree in Secondary Education Teaching at the University of Granada, 144 students of this master's degree, and 5 specialists in the subject at a national level. The data obtained were analysed by means of content analysis, using the Nvivo12 program. The most relevant results include the importance of the alternating and interdisciplinary models and development of the activities to be developed by the students during their stay in the schools. Respecting the current model, actions to create the necessary synergies and resources (tutors, supervisors, schools and planning) that promote the training model that is intended are particularly relevant.