Teacher efficacy is a central aspect of education that reflects a teacher's belief in their ability to influence student learning outcomes. A conducive school culture, including commitment and collegial support, plays an important role in strengthening teachers' confidence in teaching effectively. Additionally, the role of teacher leadership in motivating and guiding is significant in improving teacher efficacy. This study aims to explore the effect of school culture on teacher efficacy through the mediation of teacher leadership. Using a saturated sample technique, this study involved 39 respondents from Regents Secondary School Bali. Data analysis using SEM (SmartPLS) showed a positive effect of school culture on teacher efficacy, but no significant effect of teacher leadership on teacher efficacy. The study also found that there was no direct effect of school culture on teacher efficacy, nor through teacher leadership. These findings emphasize the importance of a deeper understanding of the dynamics of school culture and the role of teacher leadership in strengthening teacher efficacy to sustainably improve education quality.

Management understanding and knowledge of environmental accounting, especially related to waste management and energy efficiency, is very important to achieve business sustainability, including for Micro, Small, and Medium Enterprises (MSMEs). The Tambakrejo MSME group often lacks understanding of milkfish waste management and faces increasing energy operational costs, especially for refrigerators. Lack of environmental awareness causes milkfish waste to pollute the environment and hinder water drains. Environmental accounting integrates environmental aspects in accounting practices to measure, report, and manage environmental impacts. This Community Service educates about waste management strategies and energy efficiency based on environmental accounting principles. The results of Community Service have a positive impact, the enthusiasm of MSME actors is very high, this is evidenced through pre and post testing measuring tools for MSMEs with the results of the increasing level of public understanding of environmental awareness and energy saving in MSMEs, as well as teaching environmental cost management methods through identification, recognition, measurement, reporting, and integration of environmental aspects in the accounting system.