QSWL in a psychosocial manner is defined as "the effect of the workplace on satisfaction with the job, satisfaction in non-work life domains, and satisfaction with overall life, personal happiness, and subjective well-being". This research aimed to develop a valid and reliable measurement instrument that is designed to measure QSWL based on literature, expert and practitioner teachers' knowledge. 784 teachers were participants in this research. The draft scale included 30 items of the instruments. To validate the scale exploratory factor analysis followed by confirmatory analysis. Exploratory factor analysis revealed that QSWL scale is composed of five dimensions. Confirmatory analysis revealed that X[superscript 2]/sd ratio was in the intermediate level, the value of RMSEA and RMR were in represents of acceptable fit whereas GFI and AGFI indexes were in weak level and finally NNFI and CFI were in sufficient value. Cronbach's Alpha coefficient values for QSWL subdimensions were ranged between 0.62 and 0.85 whereas this value was 0.87 for composite scale. Consequently, this newly developed scale is a valid and reliable instrument that serves to measure and describe schools' quality of work life.