RT info:eu-repo/semantics/article T1 Advancing Environmental Sustainability Through Education: Development and Validation of a Scale to Measure School–Family Collaboration A1 Rojas Hernández, Belkis A1 Ulloa Guerra, Oscar A1 Sartor Harada, Andresa A1 Martínez Sierra, Ricel A1 García Rodríguez, Deysi Emilia K1 school–family collaboration, environmental education, measurement scale, validation, educational sustainability AB School–family collaboration is a key factor in education for sustainability. However,rigorous evaluation of this relationship has been scarcely addressed from an empiricalperspective. This study aimed to design and validate a scale to measure school–family collaboration in the field of environmental education. Based on a conceptualreview, four key dimensions were defined: strategies and communication, familyparticipation, impact on ecological habits, and implementation barriers. Contentvalidation was conducted using the Delphi method with a panel of 15 experts. Thescale was subsequently administered to 531 participants (312 teachers and 219family members) from educational centers in various regions of Spain. Exploratoryand confirmatory factor analyses confirmed a robust internal structure (Kaiser-Meyer-Olkin = 0.841; Comparative Fit Index = 0.945; Root Mean Square Error ofApproximation = 0.062). Internal reliability, assessed through Cronbach’s alphacoefficient, was high (total α = .91), with consistent values across all dimensions(α > .80). The results demonstrate that the scale has structural validity and empiricalreliability, making it a useful tool for future research, institutional evaluation processes,and the development of educational policies focused on socio-environmental coresponsibility. PB American Behavioral Scientist (ABS) SN 1552-3381 YR 2025 FD 2025 LK https://uvadoc.uva.es/handle/10324/80631 UL https://uvadoc.uva.es/handle/10324/80631 LA eng NO Rojas Hernández, B., Ulloa-Guerra, O., Sartor-Harada, A., Martínez-Sierra, R., & Emilia García-Rodríguez, D. (2025). Advancing Environmental Sustainability Through Education: Development and Validation of a Scale to Measure School–Family Collaboration. American Behavioral Scientist, 0(0). https://doi.org/10.1177/00027642251390865 NO Producción Científica DS UVaDOC RD 16-dic-2025