This study aims to test the content and face validity of Secondary School Islamic Education Teacher Self-Assessment Instrument (SSIET-SAI) using Content Validity Ratio (CVR), Content Validity Index (CVI) and Cohen Kappa Index (CKI) analysis. They are nine professional experts from universities and schools and two other expert field. Validation process involving 209 items with four main constructs and the constructs namely Reflection of Sustainability of Knowledge, Reflection of Teaching, Humanity Introspection and Continuous Professional Development. Overall findings noted (N = 9, CVI = 0.96, CVR = 183 agreed and refined items) for content validity and (N = 2, CKI = 0.785) for face validity. SSIET-SAI have great potential to be highlighted as a psychometric measuring tool of self-assessment indicator for Islamic education teacher in secondary school.