ANALISIS PSIKOMETRI BUTIR TES PILIHAN GANDA PADA PROGRAM PENGEMBANGAN PROFESIONAL GURU BIDANG AGRIBISNIS TERNAK

Abstract

One of the ways to support continuous professional development is by providing instruments that can accurately measure competence. The instruments used in professional development programs need to be reanalyzed to ensure the quality of the program. The objectives of this study are (1) to describe the empirical testing results of an instrument measuring vocational teachers’ pedagogical understanding in a professional development program, and (2) to describe the relationships among item validity, difficulty level, and discrimination index. The respondents were 99 vocational school teachers from various regions across Indonesia. The study employed a psychometric analysis based on Classical Test Theory (CTT), consisting of item validity, discrimination index, difficulty level, distractor effectiveness, and reliability. The findings revealed that out of 35 items, only 17 could be used with revisions; among them, 9 were valid, 14 had adequate discrimination power, 10 were of moderate difficulty, 3 had all options functioning effectively as distractors, and the reliability coefficient was 0.711. The correlation coefficient between validity and discrimination was 0.747, while that between discrimination and difficulty level was -0.023. The study recommends revising and adding more items to improve the quality of the instrument analysis.