This study aims to see and assess what are the direct and indirectinfluences that affect teacher performance which are influencedby the principal's leadership variable, work environment andwork motivation in high school in Muaro Jambi. In research usinga quantitative approach and survey techniques were chosen asthe data collection technique in this study that was used wasdistributing questionnaires to the respondents. The subjects inthis study were teachers at SMA Muaro Jambi with a totalsample of 250 teacher in SMA Muaro Jambi using gpower todetermine the amount of sampling. The data collectiontechnique uses a questionnaire which is distributed and collectedvia Googleform. Quantitative data analysis using the PLS-SEMmethod. The results of this study indicate that (1) the principal'sleadership influences teacher performance, (2) the workenvironment influences teacher performance, (3) workmotivation influences teacher performance, (4) principal'sleadership influences work motivation, (5) work environmentaffects work motivation, (6) principal leadership influencesteacher performance mediated by work motivation and (7) workenvironment influences teacher performance mediated by workmotivation. So, principal leadership, work environment and workmotivation influences teacher performance SMA in Muaro Jambi.