Early school leaving is a real social issue. The unemployment rate among early school leavers is higher than 40%. Dale’s studies confirm that a student learns better when he acts: he retains 20% of what he hears, 50% of what he sees and hears, and 90% of what he does. Non-formal education, active education, make teaching more attractive, more “snappy”. Students change over the years, the same is true regarding their ability to pay attention and to be focused, but teaching methods often struggle to evolve to cope with it. While recent years have seen significant progress in tackling early school leaving, efforts need to be sustained and the focus must be put on prevention.This is the objective that DROP'IN gave itself by allowing the cross between the formal education and the non-formal education environment to keep students and teachers to be into in the educational environment.It is the question of keeping the students motivated that is worked here, in response to the fight against school dropout. DROP'IN is a long-term investment and is therefore a project that worked closely with teachers during 36 months to give them knowledge and skills in the non-formal education sector, to enable them to become trainers for their peers so that the dynamics continue beyond the project. The achievements of this 36-month project were: teacher training on techniques and attitudes / method of non-formal education, research and state of the art in the partner regions, test period and implementation through teacher-expert pairs of non-formal methods for students from 12 to 18, capitalization, dissemination and multiplication of good practices developed for opening up to other schools.The project developed a state of the art, a catalogue of techniques, a training in non-formal methods - a veritable vademecum for teachers - an analysis of the practices tested and their valorisation in the form of an online portfolio as well as a policy paper indicating the specific axes to develop to contribute to this fight against early school leaving. The partners gathered around the project combined expertise from the non-formal education sector with secondary schools as well as a University from 5 European countries impacted by the issues of school dropout (Latvia, Belgium, Italy, Bulgaria and La France). Transversality is a key word of the DROP'IN project: the partners are diverse and complementary in the consortium (associations, municipalities, schools and University) and in each country, a local steering committee was created and developed the adaptation of DROP'IN in the local context, involving all the stakeholders of the wider educational community (teachers, parents, institutions ...). In doing so, these steering committees facilitated the ownership of the project by a broad network of associated partners and the dissemination of results on a large scale.