The study investigated the levels of school happiness and school effectiveness, and also examined for the relationship between school happiness and school effectiveness variables as well as the predictive relationships between school happiness and school effectiveness. Data was collected from 432 teachers with a simple random sampling at different schools in 2021 in a provincial city through School Happiness and School Effectiveness scales. Confirmatory Factor Analysis was used to establish validity and Cronbach Alpha was used to check the reliability of the instruments. In addition to means and standard deviations, correlations and regressions used to analyze the data. All significant medium and high positive relationships were found among the study variables. School administration had significant positive effects on all school effectiveness variables. Learning environments, cooperation and activities follow school administration.