Abstract
The research comes within a sociological comprehensive approach. It focuses on the process of teachers’ professionality construction, on the professional integration dynamics and on the various resources mobilized by trainees. Survey methodology is dual-framed: quantitative with a questionnaire on line from February to April 2013 (n = 160), qualitative with 12 semi-structured interviews with trainee teachers of various disciplines. Results highlight a resource system that mobilize institutional norms, relayed by the initial and in-service training, by more or less shared professional cultures and by forms of support in which the relationship to the tutor takes an essential place. It is noticed that "the profession ideal" acts as a guide to the activity. Pupils, disconcerting sometimes, are also a main resource.