How can you encourage effective parental involvement in learning and language acquisition? And how can we improve existing Flemish practices to better support parental involvement at home? The academic success and well-being of students depends partly on the extent to which parents are involved in their children's school careers. The involvement of parents at home appears to be of relatively great importance: parents who show an interest in school life and who have positive expectations with regard to school success appear to have a positive impact on their children's well-being and involvement in school. To achieve school success, focusing on the combination of parental involvement and language development is therefore a potentially powerful lever: after all, sufficient high-quality opportunities for interaction in the living and learning environment are of crucial importance for language development. This research project therefore aims to answer the following research questions:1. According to the (international) literature, which strategies or programs are effective forms of parental involvement at home in learning and language acquisition?2. Which critical success factors and crucial preconditions do you find for effective forms of parental involvement at home?3. What practices exist in Flanders and in similar education systems to realize and support parental involvement at home? To answer the research questions, we will use the methodology of Educational Design Research or Design-oriented Educational Research.