This study examines parental involvement in urban public schools, focusing on how parents in organised school-centred networks support, navigate, and negotiate from their different social positions. The multiple case study of specialised music programmes provides insights into parent strategies and behaviours in intermediate practices between school-based socialisation and extracurricular activities largely run by the parents associations. The paper draws on data from in-depth focus group interviews with members of parents associations in socially, culturally, and historically different schools. Findings demonstrate that parent approaches to specialised education and their modes of involvement vary according to social class, resources, and school culture. There are class-based differences in parent strategies and the way their collective symbolic capital is used in policy negotiation. However, relationships between a parents association and the school administration are generally regulated by the social and cultural history of a particular school.