School culture is considered to be a system of meanings that influence every aspect of the school including school effectiveness. The aim of this study is to examine the impact of school culture on school effectiveness in government schools in Maldives. A quantitative approach using a survey design was adopted for the study. In order to achieve the research objective, a sample of 359 teachers was selected from government schools in the capital city, Malé through stratified random sampling. In the study, data were collected with scales related to two different variables, school culture and school effectiveness. Descriptive and inferential statistics were used to analyse the data using SPSS-25 and AMOS-25. The study revealed that the level of school culture and school effectiveness were high in Maldivian schools. According to the results, school culture had a significant influence on school effectiveness. The findings suggest that a positive and collaborative school culture enhances school effectiveness. In addition, it reflects the importance of creating a positive and collaborative school culture that empowers all school members to work towards common goals, which improves the effectiveness of the school. The findings confirm the current proposition that a positive school culture is instrumental in achieving school effectiveness, adding clarity to the understanding of school culture as a critical component of an effective school.