This study investigated external environmental factors affecting schools and teachers' job performance in Bayelsa State, employing a correlational design. A sample of 150 teachers was selected from 9 educational zones of the state using a simple random sampling technique. A 15-item questionnaire titled "External Environmental Factors of Schools and Teachers' Job Performance Questionnaire (EEFSRJPQ)" was developed employing a 4-point scale for data collection. The instrument's reliability was assessed using the Pearson product-moment correlation coefficient, yielding a reliability coefficient of 0.89. Data analysis was conducted using means. The study findings revealed that external environmental factors significantly influence teachers' job performance. Based on these findings, the study recommends that the state government refrain from adjusting teachers' salaries. Additionally, it suggests that law enforcement agencies should intensify their efforts against crime in rural areas of the state.