Assessment of Literacy and Numeracy of Indonesian Students Using the Integrated Science-based Science Literacy Test

. People’s high literacy and numeracy levels are significantly influenced by the development of a nation. This study aims at developing the assessment instruments on Senior High School science program students’ literacy and numeracy ability based on the integrated sciences. The literacy and numeracy indicators used were some indicators of the scientific and mathematics literacy achievements developed by PISA 2015. The literacy and numeracy test instruments were in the form of testlet consisting of 12 popular science readings containing 20 items measuring the literacy and 16 items measuring the numeracy. The instruments were tested to 310 XII grade students of SMAN 2 and SMAN 3 Tegal City. The test validity was examined using the Rasch model approach. The Senior High School science program students’ literacy and numeracy test instruments have met the validity aspects both related to the material and psychometric aspects. The construct validity aspects with the Rasch model approach showed that the Senior High School science program students’ literacy and numeracy test instruments were valid seen from the difficulty level and item appropriateness with the model. The literacy achievement of the XII Grade students of SMAN 2 and SMAN 3 Tegal City was 57.45 % while their numeracy achievement was 43.18 %.