The National Study on Children’s Well-Being (Enabee), launched by Santé publique France in 2021, aims to assess the mental health of children ages 3–11 by giving them a voice—which is what makes it unique. To ensure its smooth implementation, a consultation process was established between 2021 and 2023, involving various stakeholders (healthcare professionals, teachers, parents, National Education unions, etc.). Although uncommon in epidemiology, this dialogue between the project team and stakeholders helped alleviate concerns about the sensitive—and even taboo—topic of children’s mental health and facilitated the study’s implementation.