Recent works highlight that a graphomotor analysis of the pupil’s movements throughout his schooling for a maximum of writing and production situations could contribute to improving the support of the learning of handwriting well beyond the first years of school. However, to our knowledge, there is no tool to date that could constitute a shared and mobilizable help for all teachers from kindergarten to high school for such process. The Web-platform Copilotrace tries to answer this problem. After a review and a discussion of the uses of digital technology to assist teacher’s practices of evaluation and monitoring of students’ graphomotor skills, we present the architecture, and main functionalities of Copilotrace. These functionalities are centered on the contextualized acquisition, storage, and analysis of graphomotor tasks. Then, we illustrate the main contributions of the use of Copilotrace thanks to three research-actions of the EMagMa project.