Learning is a process of interaction between teachers and students that is intense and directed in order to meet predetermined goals. Implementation of learning goes well, as can be seen from the effectiveness and success of the interaction process of the various components involved in it. The policy of implementing online learning is useful for limiting the transmission of the COVID-19 disease to students in all schools, causing various pros and cons. The purpose of this study is to find the advantages and disadvantages of online learning systems, and how existing problems solution. This research is a literature study with a qualitative approach. From the results of the study, it found that the implementation of online learning during the COID-19 pandemic had an unfavourable impact on improving student achievement so that a better strategy needed from school management.