Item Analysis Of English Summative Test At Vocational High School

Abstract

The objective of this Research Project is to find out the quality of test items in terms of item difficulty, discrimination power, and distractor effectiveness. This research also aimed to find out the result validity and reliability of summative tests at tenth-grade vocational high schools. This research was a descriptive quantitative study. The object of this research was test instruments of the summative test, including documents of teacher-made tests, key answers, and student responses of tenth-grade students at four different schools in Tegal Regency. The data was collected by documentation method and analyzed using the software program SPSS 27 version. The result of this research is that all the schools have good item difficulty index. Meanwhile, the quality of discrimination power for school C did not satisfy enough to distinguish higher and lower student performance. However, the items can still be accepted and improved in the future. The item quality of distractor effectiveness of school A 0,79 are accepted, school B 0,71 are accepted, school C 0,61 are accepted, and school D 0,94 are accepted. Based on the validity result, it was found that school A and school C have low valid points. Fortunately, all the school’s test items are reliable, which means the tests are consistent. In summary, the items in the English summative test of the first semester for tenth-grade Vocational High School in Tegal Regency in the academic year 2023/2024 could still be used as a test instrument with some revisions and improvement from the test maker.