In this study, issues concerning the design of scales for measuring teacher sense of efficacy (TSE) are first identified with particular attention to the Teacher Sense of Efficacy Scale (TSES). Psychometric issues concerning analysis and reporting of TSE data are subsequently identified. Recommendations are offered about all identified issues, and these recommendations are taken into account when obtaining and analyzing TSE data from Chinese mainland preservice and inservice teachers. Exploratory factor analyses yielded a single factor for both samples as well as for four subgroups within the inservice teacher sample. Results also provided insights about scale design as well as the TSES being limited for capturing the breadth of TSE. Suggestions are made for improvements in the assessment of TSE.