This study aims to problematize the monitoring of the implementation of the Health at School Program (PSE) in the municipality of Rio de Janeiro - PSE Carioca. This is an intersectoral municipal policy derived from a federal policy with the potential to become an effective instrument in the construction of a Com-prehensive Protection Network, especially for children in Early Childhood Educa-tion. The paper presents the historical trajectory of the relationship between health and schools in order to discuss the concept of intersectoriality used in the Health at School Program and the relevance of its implementation in Early Childhood Education. We analyzed publicly available data for evaluating and monitoring the Program in a specific region of the municipality of Rio de Janeiro. This is a doc-umentary and bibliographical study which concludes that this program in the city of Rio de Janeiro, especially in Early Childhood Education, has problems in re-cording its information, which hinders the evaluation and monitoring of the Pro-gram. Based on the information available, we also noticed signs of inequalities in its implementation, which would be the exact opposite of the program s objective. The data obtained, in line with the literature on the subject, leads us to question whether we are dealing with a truly intersectoral program or whether what exists is just a one-off health action that takes place in the physical space of the school.