Obra Mercedaria takes the intervention as aim with persons deprived of freedom. One of our statuesque purposes is the prevention in youth of criminal conducts, as well as the alternatives when they have already released offenders or they are in phase of half-freedom. That is why the project “asomándonos a las rejas” has as its main objective the intervention on youth inmates of the Valencia penitentiary dated through some activities realized weekly during school year and some ad hoc activities in holiday’s time. Another aim is the conviviality of our volunteers with those that to his exit in regime of half-freedom live in the halfway house managed by the Association, as well as activities of community prevention that are organized during the year. The participant’s number of Erasmus+ is of 3 during one year, being the group of volunteers of 15, and the group of inmates between 40 and 60 throughout the year. The activities that we have done during this project have been (these activities have been planned and prepared by our young volunteers group, both Spanish and Erasmus+): At prison: * Sport workshop, once a week. * Social skills workshop, once a week. * Ad hoc activities: on Christmas (2-day creative workshop), eastern (2-day literary workshop) and summer (15-day holiday camp). At sheltered housing: * Assemblies to resolve conflicts of coexistence, weekly. * Shared housework. * Weekly cultural excursions. * Weekly therapeutics groups. The result of the project is highly satisfactory, though it is necessary to stand out the qualitative impact, which is difficult to visualize. All the evaluations give 100% of participating inmates satisfaction, being the most prominent the quality in the personal relations that have been established between them. About quantitative level to indicate that the participation has been 90%. As for the Association that manages the project the impact has been very notable, thanks to its diffusion on the university. Due to this we have incorporated more than 20 young volunteers, implying to the whole educational university community. Being for us a regeneration in the association.