School–family collaboration is a key factor in education for sustainability. However,
rigorous evaluation of this relationship has been scarcely addressed from an empirical
perspective. This study aimed to design and validate a scale to measure school–
family collaboration in the field of environmental education. Based on a conceptual
review, four key dimensions were defined: strategies and communication, family
participation, impact on ecological habits, and implementation barriers. Content
validation was conducted using the Delphi method with a panel of 15 experts. The
scale was subsequently administered to 531 participants (312 teachers and 219
family members) from educational centers in various regions of Spain. Exploratory
and confirmatory factor analyses confirmed a robust internal structure (Kaiser-
Meyer-Olkin = 0.841; Comparative Fit Index = 0.945; Root Mean Square Error of
Approximation = 0.062). Internal reliability, assessed through Cronbach’s alpha
coefficient, was high (total α = .91), with consistent values across all dimensions
(α > .80). The results demonstrate that the scale has structural validity and empirical
reliability, making it a useful tool for future research, institutional evaluation processes,
and the development of educational policies focused on socio-environmental coresponsibility.
