Teachers play a critical role in facilitating the career and life planning of secondary school students. This paper describes the development of the Career-Related Teacher Support Scale (Hong Kong Secondary Students Form). Based on data obtained from 493 students in Hong Kong, five types of career-related teacher support were identified with the most important form of support being teachers' knowledge about the world of work and study path requirements. A correlation model yielded the best fit to the data. No variance in response pattern appeared across genders, and the new scale was found to have good validity and reliability.