Construction of the Elementary School Students’ Subjective Well-Being in School Scale: An exploratory mixed-method study

The purpose of this study was to construct a scale for assessing the Students` Subjective Well-being in School (ESSSWBSS). For this purpose, based on an exploratory sequential mixed methods design, two studies were conducted. In the first study, using purposive sampling of the criterion type, 29 key informants including teachers and elementary school students in Tehran. Research tools were researcher-made single-item questionnaire and semi-structured interviews. Data were analyzed by Colaizzi's method has led to identifying six main themes of 'executive-administrative ', 'cultural', 'environment', 'friends', 'teaching and teacher ethics' and 'individual'. the second study, among elementary school students in Tehran 387 students were selected through three-way cluster sampling. Psychometric properties of tools were evaluated using content validity, examination of items, structural validity and reliability determination. The content validity ratio (CVR) of each of the items above the criterion of 0.54 and the overall validity of the tool (CVI) was 0.735. Validity of the scale was confirmed by content validity based on experts' opinion; the reliability of the scale was calculated using Cronbach's alpha and its value was0.86. The results of the exploratory factor analysis showed the extraction of six factors. The item characteristic curve indicates that the majority of the items have a very good and sometimes good condition. In general, it can be said that the quality of the tool is of good quality because it provides a high level of information in a significant range of the ability continuum (-2 to +1).