INITIAL VALIDATION OF A NEWLY DEVELOPED SCHOOL-RELATED WELL-BEING INSTRUMENT: A RASCH MODEL APPROACH

Abstract

As adolescents spend a substantial amount of time in school, understanding their school-related well-being is essential for supporting their overall development. To facilitate this, a valid and reliable measurement instrument is required. This study employed a quantitative research design to evaluate the psychometric properties of the newly developed Students’ School-related Well-being Instrument (SSWI). Data were collected from 100 secondary school students in Wilayah Persekutuan Kuala Lumpur, Malaysia, selected through simple random sampling. Rasch analysis was conducted using Winsteps (Version 5.3.3) to assess the instrument’s validity and reliability. The results indicated that the SSWI demonstrates satisfactory psychometric properties. However, some limitations were noted in content representativeness. Further refinement of the instrument is recommended to enhance its ability to comprehensively assess students’ school-related well-being.