Abstract
School administration must pay attention to professional teachers' roles rather than nonprofessional teachers as part of important human resources in imparting learning. This study aims to analyse the influence of leadership, work environment, and organisational culture on the teachers' competence and performance in Prajnamitra Maitreya Foundation Pekanbaru, Indonesia. A total of 57 teachers participated in this research. A descriptive analysis of questionnaires and hypothesis analysis using path analysis was used to analyse the data from the saturated sampling method, where 57 teachers became the sample and were categorised based on age, gender, level of education, years of service, and work unit. Using Smart PLS (Partial Least Squares), this research revealed that leadership and work environment positively but non-significant affect the teachers' competence. Meanwhile, organisational culture has a positive and significant effect on the teachers' competence but a non-significant positive effect on the teachers' performance. Thus, the work environment and teacher's competence have a positive and significant effect on the teacher's performance, yet leadership has a negative and non-significant effect on the teacher's performance.