The development of generic skills is a focal issue in education policy and school curriculum reform across countries. This study in the Hong Kong context explores the sources of formal and non-formal curriculum and learning activities related to senior secondary students' perceptions of learning outcomes in creativity, communication, and problem solving. Findings showed that students tend to associate the development of generic skills to specific subjects, such as visual arts, languages, and a variety of extra-curricular activities, such as leisure-related, art-related, formal learning-related, and service-related activities. The implications for curriculum development are discussed.