A consortium of five schools organized by the Wallonia-Brussels Federation and coordinated by the General Department of Education organized by the Wallonia-Brussels Federation wants to improve its practices for remediation at the secondary level by observing three school systems known in Europe for the quality of their teaching. Three groups of eight people including at least one principal, and teachers known as very involved in remediation activities, will receive training on the three school systems and will observe the teaching practices of learning support in one or two schools. An observation grid will be used to establish a diagnosis for each of the school systems studied. This will lead to the establishment of a code of good practice in remediation (which will be organized by the consortium's schools within their possibilities, and to the development of a training module for principals and teaching staff. Both productions are likely to reach more than 80,000 teachers who can improve their daily practice for the benefit of their students.