The concept of subjectivization guided the progress of this thesis, to understand the reorganizations in the processes of the subjective self-construction of the child, caught in the dominant discourses of our postmodern time.The creation of a differentiated psychic space inherent to the processes of subjectivization, poses at the outset the link to the Other and the link to the others within the family and social institution in which the child evolves. The impact on the subjective construction processes was explored from the angle of the school, according to the father-mother-child triangulation and its repetition in the school-parents-child triangulation. An historical approach of the academic institution has enabled to extricate five clinical changeovers, showing an evolution in the places assigned to the different school partners and the respective idealized roles, affecting the subjective and intersubjective issues.The relationship with the father will arise from the filiation / affiliation articulation, developed from the concepts and issues of naming and identification. The function of the imaginary father (paternal imago) will be examined and seems hindered by the shadow cast by the maternal Other. This impediment, leaning on the dominant discourses of immediacy erasing the generation difference, seems to put up a stumbling block on the imaginary phallic function deployment at the time of childhood. The impediment of this "future to come”, carried by the oedipal promise, seems to highlight the fraternal term, built at the time of the intrusion complex.The social Other is called in substitution, always earlier in the process of subjectivization at the time of the childhood. This process cannot be conceived without the Other, in order to find the path the One to the other.