This study discussed School Closures During a Pandemic; What is Missing and How far is learning lost in schools as a result of school closures. In this study there were two subjects, namely SMP Negeri 02 Jelai Hulu and SMK Negeri 1 Jelai Hulu. The reason I chose this school because it was affected by the learning process during the pandemic, and had a limited learning process. In that school, 4 teachers and 4 students in one school. In class VIII, IX, XI and XII used be selected by purposive selection. Based on the
results obtained, the researcher concluded that it is true there used a learning loss which has been described in chapter 4. From the results of this study it occurs in all aspects of knowledge, skills and attitudes. Loss of
learning has more impact on knowledge. Meanwhile, skills and attitudes also clearly occur because they are closely related to skills and attitudes.

Keywords: School closure, Learning loss, Online learning