The Standardised Teacher Assessment and Review (STAR) assessment framework provide operational definitions and understanding of the key aspects of teacher competencies measured by STAR. It details on how these competencies are measured, enabling necessary decisions related with teacher proficiency. The framework establishes parameters for test development through a principled design approach and defines the scope of content for the assessment instrument organised into four domains and 12 strands. The subsequent sections describe the detailed content related to each domain, ensuring comprehensive coverage and clarity in the assessment process. The robust structure not only supports the integrity of the assessment but also aligns with best practices in educational evaluation. Development of the framework started with a review of the literature, specifically focused on in-service teachers’ professional learning that identified the key elements for inclusion in the assessment. Drawing on the experience of reputed academic leaders and teachers from partner schools, the element list was further refined and distilled to indicate how these elements are aligned with the National Professional Standards for Teachers (NPST). The framework is designed for use by academic school leaders, programme coordinators, subject coordinators, and those who design and implement professional learning opportunities for their teachers.