The pandemic of COVID-19 has changed many aspects of life across the globe including in Indonesia. In order to prevent the spread of COVID-19 the president of Indonesia announced national distancing rule and encouraged citizen to work and study at home. Universities have changed the learning system into online learning by using technology and internet connection. This situation was not easy for learners since they needed to change learning system immediately while facing some issues due to the pandemic. Therefore, this study intended to investigate Learners' Perception toward Online Classroom Environment during Coronavirus Pandemic using qualitative approach with a case study design. The data was gathered by using questionnaire and interview. This study found that generally learners have positive perception on English online classroom based on ten aspects, they were:

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This study aims to determine differences in knowledge, preparedness, perceived risk, and preventive behavior in implementing health protocols between post-infected individuals and those who have never been infected with Covid-19 at the Aceh Regional Police. This study was obtained by means of purposive sampling involving 330 respondents, divided into 165 respondents who had been infected with COVID-19 and 165 who had never been infected with COVID-19 with a validity value above 0.3 and a Cronbach alpha value above 0.6. The data collection technique used a questionnaire/questionnaire and the data analysis technique used the chi-square test. The results showed that knowledge, preparedness, perceived risk, and preventive behavior of respondents who had been infected with Covid-19 were better and had a different significance value below 0.05.