Analysis of the quality of mathematical examination items for high school ‘A’ in Bekasi

The parameters of educational success can be measured by conducting an educational assessment in the form of an evaluation. In the process of evaluation, especially learning outcomes evaluation, teachers generally use the examination system. The purposes of this research are to analyze the quality of Mathematics exam questions made by teachers and predict the Mathematics ability of ‘A’ High School students in Bekasi. The data used are the exam questions, the answer of exam questions and students’ answers to the Mathematics final exam with 148 subjects of Grade 10 students of ‘A’ High School in Bekasi. The method used to achieve these purposes is Item Response Theory with 4 parameters. The result of this study obtained show that from 30 exam questions made by the school, there are 19 items with good quality to measure the ability of students. The result of the analysis based on all items, it was found that from 148 students who took the Mathematics Examination at the ‘A’ High School in Bekasi, there are 25 students with low level of ability, 97 students with medium level of ability, and 26 students with high level of ability. The result of the analysis based on good quality items, it was found that from 148 students who took the Mathematics Examination at the ‘A’ High School in Bekasi, there are 21 students with low level of ability, 103 students with medium level of ability, and 24 students with high level of ability.