This study analyzes the direct and indirect effects of organizational culture and HR practices on employee performance in Indonesian vocational schools, focusing on the mediating roles of internal communication and compensation. Using a cross sectional survey of 285 staff and PLS-SEM analysis, the research finds both organizational culture and HR practices directly enhance performance (Anwar & Abdullah, 2021; Li & Zhang, 2022). Additionally, internal communication and compensation partially mediate these relationships. Specifically, organizational culture strongly predicts communication effectiveness (Singh & Gupta, 2022), while HR practices significantly influence compensation fairness perceptions (Park & Lee, 2021). The cross-sectional design limits causal inference, suggesting need for longitudinal future research. Practical implications indicate that school administrators should simultaneously develop collaborative cultures and structured HR systems (Darmawan & Santoso, 2022; Kurniawan & Setiawan, 2023), as these synergistically improve performance through clearer communication and equitable remuneration. This study's integrated model uniquely positions communication and compensation as central mediating mechanisms within vocational education.
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