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School beginning is a very important step for the integration of a child in the society. As they enter on school, the extent to which children had acquired some prerequisite skills represents a predictive element of their school success in the years to come. Some children from lowincome families show more difficulties regarding the learning of kindergarten critical skills. They are more at risk of having learning disorders. Sometimes, child’s play and parent-child interactions, which are both key-elements of school preparation, are altered by the context of economic precariousness. In order to identify promising intervention strategies to facilitate school preparation for those children, this text starts by defining the notion of school prerequisite skill and by suggesting a categorization for kindergarten critical skills. In addition, seven preschool intervention programs are described and analysed. Pertinence of occupational therapist’s role in such programs is discussed. This professional can foster positive parent-child interactions and promote play in families’ daily living; thus, he could offer a different intervention approach than other actors implicated in preschool programs.