The purpose of the study was to find the effect of teachers’ workload on students’ academic performance in Kelantan Islamic Foundation School around Pengkalan Chepa. Three specific research objectives which guided the study were; to study suitable the current workload among the linguistic teacher that teach final year students, to study on performance of student in the class for linguistic subject, to study suitable the current workload on improving the quality of the teaching ( p&p process) in the context of heavy teachers’ workload. The study was conducted in Kelantan Islamic Foundation School around Pengkalan Chepa. For this study the researcher choose qualitative approach. Under the qualitative research approach the researcher focus on documentary review and interviews The research show that teacher heavy workload will give negative effect on student academic performance in Kelantan Islamic Foundation School around Pengkalan Chepa. From the finding, it is recommended that various parties responsible for helping teachers address the problems faced. Among those helping to reduce the workload of teachers is the Ministry of Education. In addition, the role of education departments, Kelantan Islamic Foundation and school administrators are also needed to ensure the welfare of teachers defended.