Enhanced scientific literacy is the primary purpose of science education throughout the world, especially in Indonesia, where the students' scientific literacy capability is still far behind those of other countries. Achieving this requires an assessment instrument that can guarantee students' achieved scientific literacy capability at school. Based on many studies, we may conclude that there are at least three dimensions of scientific literacy, namely Scientific Reasoning Skill, Scientific

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... iry Skill and Nature of Science Knowledge. This study aimed at building the scientific literacy assessment framework for Senior High School Science Program Students based on Scientific Reasoning Skill, Scientific Inquiry Skill and Nature of Science Knowledge, here in after referred to as 3-Dimensional Scientific Literacy Assessment. This study was conducted by reviewing various concepts of scientific literacy, building indicators for each of the dimensions and carrying out validation by involving experts and practitioners. The validity used in this research is content validity and psychometric validity .The research results show: (1) The Scientific Reasoning Skill dimension consists of 25 indicators from distinguishing an object from the other correctly if a picture or data were given to making correct conclusion based on the relationship of two or more variables, (2) The Scientific Inquiry Skill dimension consists of 5 indicators from building the basic concept from one's own experience to delivering explanation of the phenomenon observed more realistically, (3) The Nature of Science Knowledge dimension consists of 8 indicators from distinguishing fact and explanation to distinguishing fact and belief.