This qualitative study involving 30 teachers, followed by a survey of 895 teachers, investigated Hong Kong teachers' perception of a whole-school approach to guidance and its practice. Findings revealed that teachers perceived a whole-school approach as fostering student development and as a system of management. Teacher dedication, communication, and team spirit were considered as facilitating factors for its implementation. Findings also revealed an overall mismatch between teachers' beliefs about a whole-school approach and their perceived school reality, and that a wholeschool approach was not seen as practised in the majority of schools. There was a close relationship between schools' guidance focus and their implementation of a whole-school approach. Schools implementing a whole-school approach were considered to have both a preventive and developmental guidance focus and practice. Implications for the implementation of guidance are discussed.[Copyright of British Journal of Guidance & Counselling is the property of Routledge. Full article may be available at the publisher's website: http://dx.doi.org/10.1080/030698880220106528]