The enhancement of bilingual vocabulary in government secondary schools is essential for equipping students with the linguistic skills necessary for success in a globalized world. Despite the considerable benefits of bilingual education, challenges such as rigid curricula, inadequate teacher training, limited resources, and varied student motivation impede effective vocabulary development. To address these issues, a comprehensive approach is needed, including curriculum integration, targeted professional development, and increased resource allocation. By adopting strategies such as bilingual instruction across subjects, fostering interactive and contextual learning, and involving families and communities, schools can better support students' bilingual vocabulary growth. Implementing these measures will help overcome existing obstacles and ensure that students develop a robust bilingual vocabulary that enhances their academic and professional opportunities.