This contribution discusses stakes and limits of training in the technical skills waited at the future teachers of primary school. ICT training is certainly necessary to hope to see educational practices developing with. But it is only one of the levers for their integration in the school practices. ICT training supposes that we emphasize the analysis of practices. More than to train “simply” in the educational use of digital tools, it is indispensable to train in the complexity of their intellectual and practical stakes.