Parent education programs, offered via family–school partnerships, offer an effective means for promoting the mental health and educational functioning of children and adolescents at a whole-school level. However, these programs often have a low uptake. This study aimed to identify strategies for increasing the uptake of parent education programs within preschool and school settings. A three-round Delphi procedure was employed to obtain expert consensus on strategies that are important and feasible in educational settings. First, thirty experts rated statements identified from the literature and a stakeholder forum. Next, experts re-appraised statements, including new statements generated from the first round. Ninety statements were endorsed by ≥80% of the experts. Primary themes include strategies for program selection; strategies for increasing the accessibility of programs and the understanding of educational staff on parent engagement and child mental health; strategies for program development, promotion and delivery; as well as strategies for increasing parent and community engagement. This study offers a set of consensus strategies for improving the uptake of parent education programs within family–school partnership.