Buk bilong Pikinini (BbP) provides access to early childhood education and care (ECEC) programs with a specific focus on English language literacy for children from vulnerable communities in Papua New Guinea. This is highly relevant, given the fact that there is likely an over-representation of illiteracy in disadvantaged households and few opportunities for children within those households to be ready for a school system with English as the language of instruction. Established in 2007, BbP has been in operation for more than 10 years and has opened 17 library sites in that time. This evaluation provides evidence about the likely effectiveness of the programs relative to best practice and in the early childhood and school policy and program delivery context of PNG. The major methods used were literature review and critical review of BbP documentation, and stakeholder consultations, semi-structured interviews and observations of classrooms.