Introduction: Epidemiological studies show that the drowning phenomenon is a global health issue (World Health Organization, 2014). Even if national educational policies attempt to reduce this safety issue (Potdevin & al., 2019), studies show that they are unevenly distributed in Europe. On the other side, aquatic Physical Activities (PA) provides many opportunities for physical activity (PA) to overcome the sedentary lifestyles of our youth worldwide. In this way, Aquatic Literacy (AL) appears as an innovative concept, leading to a new way of thinking and teaching swimming throughout Europe to challenge drowning prevention and PA promotion. Objectives: The aim of the ALFAC project (Aquatic Literacy For All Children) is to promote high quality aquatic education for 6-12 years old children with a dual challenge: protecting against drowning while engaging in an aquatic environment throughout life. To perform this, we propose a methodology to build a gender and age-specific AL assessment that gathers the different actors of the aquatic world through educational priorities. Methodology: We gathered European actors in swimming education: educators (physical education teachers, swimming instructors), researchers and stakeholders (curriculum developers, swimming policies). The Delphi method (Green, 2014)was used to reach a consensus between actors on several test designs (motor, adaptive and cognitive). Results: We hypothesize that this collaboration could provide a comparison grid of swimming programs and a European database to assess children’s AL levels according to their age and gender, while going beyond cultural issues. Conclusion: Thanks to this cooperation work between actors in swimming instruction, we aim to generate con- structive debates to create common pedagogical tools, inspired by the practices of partner countries. Through a large diffusion, we hope that these tools will become a reference for children, educators and actors, to develop AL and to engage children in the aquatic environment safely throughout their lives.