This extended data record contains the qualitative research instruments and methodological materials supporting the study “From Adaptive Practice to Competency-Based Supervision: Rethinking Clinical Associate Supervision in Rural South Africa”The materials include the semi-structured interview guide, participant information sheets and informed consent forms used in English and isiXhosa, and the COATS-informed coding and analytical framework used to support analysis of the qualitative interview data.The underlying interview data are not included because the qualitative data were collected under conditions of confidentiality and informed consent that do not permit unrestricted public release