Objectives: to identify the nutritional status of children in a school community and to identify the nursing diagnosis in the community management focus for the promotion of child health and healthy eating in that community. Method: a cross-sectional, quantitative study was conducted to assess the nutritional status of children using anthropometric data, including brachial perimeter and the tricipital skinfold, in a sample of 227 children, from which the brachial mass area and brachial fat area, and the respective Z Scores were calculated. To assess community management we surveyed 176 parents and 49 education professionals, using a questionnaire based on the MAIEC clinical decision matrix as a reference. Results: we identified severe malnutrition in most children (51.3%) and a community management committed to the promotion of child health and healthy eating in more than 70% of the community members (parents and education professionals). Conclusion: Children’s nutritional status and diagnosis in community management were identified. The need to intervene in a multidisciplinary approach has become objective, with the school community as the unit of care, in a systemic perspective, regarding to the application of the Nursing process.