Conclusion The quality of schools can be maintained and even improved, even though learning activities must be carried out online, due to the Covid-19 pandemic. The Juran Trilogy can be an alternative for quality improvement. The principal has an important role in quality planning, quality control and quality improvement. During the Covid-19 pandemic, the Principal must have strategic steps, so that health is guaranteed, but the quality of education is maintained. The results
showed that the policies that had been planned and carried out by the Principals of SMA which were under the auspices of the Mardi Wiyata Foundation had been going well.