The global demand for English proficiency has driven the expansion of English Medium Instruction (EMI) schools, including in Indonesia. This study investigates the factors influencing Indonesian parents’ decisions to enroll their children in EMI schools, focusing on cultural, socioeconomic, and educational dimensions. The objectives of this research include identifying key decision- making factors, examining cultural and socioeconomic influences, and understanding parents' expectations for educational quality and language development. Employing a qualitative case study approach, data were collected through semi-structured interviews and questionnaires with six parents in Surakarta. The findings reveal that parents of higher socioeconomic status, determined by income and educational attainment, prioritize EMI schools for their alignment with aspirations for international readiness, viewing them as strategic investments for their children’s future. In contrast, parents from middle-class backgrounds emphasize a balance between affordability and cultural preservation. The study addresses three core research questions: (1) Parents are influenced by the curriculum, consistent use of English, quality of facilities, and teaching methods that encourage active participation and critical thinking; (2) Cultural factors, such as preparing children for global opportunities, and socioeconomic considerations significantly shape decisions; (3) Parents expect EMI education to develop language fluency, academic excellence, and character-building, with many expressing satisfaction with the immersive English environment and holistic development. However, challenges such as unmet curriculum expectations and financial constraints were also noted. This study concludes that EMI schools should balance linguistic and cultural education to fulfill parental expectations while maintaining transparency in curriculum implementation. Practical implications include developing policies that promote equitable access to EMI schools and integrating findings into academic discussions, conferences, and school dissemination programs.