Determining the Qualifications of the Secondary School Students in the Field of Quadrilaterals: A Scale Development Study

Abstract

Testing-assessment is needed to determine whether the education process is successful or at what level. For this reason, it is of great importance to determine the achievement level of the students at the secondary level. The purpose of this study is to develop an achievement test consisting of multiple choice questions about ‘quadrilateral’ subject of secondary school students by using alternative assessment techniques. The study group of this research, which is a descriptive survey type, consists of 372 secondary school students who are in the seventh grade in Aydın and Muğla during the 2018-2019 academic year. In the study, ITEMAN, SPSS and JMETRIK programs were used based on Classical Test Theory and Material Testing Theory. The formed item pool was subjected to the appearance validity by five trainers, who are experts in that field. According to the experts’ opinions, it was decided that for the achievement test, 28 items were to be included in the test primarily. It was decided as a result of analysis of the data obtained from the students that an item with very low item-specificity index, four items that do not provide model data compliance in Rasch analysis and two items identified to have item bias may be excluded from the test were excluded from the test. After these processes, the final testing tool consisted of 21 items and the average difficulty index of the test was .64; the discrimination index was calculated as .40. The Cronbach Alpha internal consistency coefficient of the final state was determined as .81. According to these results, it can be said that the achievement test has sufficient validity and reliability.