The way to improve education quality is by implementing (Internal Quality Assurance System). This research aimed to examine the implementation of IQAS on content, process, and assessment standards during the covid-19 period at SDN 1 Dasan Tereng. This research used a qualitative approach with a case study method. Data were collected through observation, interviews and documents. Research result shows that in the Quality Mapping, teacher needs to increase competencies in preparing lesson plans, curriculum development, media use and authentic assessment. In the quality planning and implementation, workshop was held in preparing lesson plans, curriculum, media and authentic assessment. Meanwhile, in monitoring and evaluation, it was found that the curriculum workshop has not carried out yet and new quality standards have not implemented by school. Thus, school was not disciplined in implementing the Internal Quality Assurance System therefore the implementation of IQAS was not optimal.