For colleges and universities, it is still necessary to carry out online teaching according to the original teaching plan, but only to move the classroom online. There is a basic standard, which is to show high-quality resources. As far as primary and secondary schools are concerned, in addition to resources, we should also consider the learning characteristics and online time of different students to protect our eyes. If three conditions are met, scientific research can organize the start of a new semester. Let's take a look at it in detail.

1. From the notice of the central leading group for solving the epidemic situation of pulmonary infection in COVID-19, it is a great standard to postpone the start of the new semester again under normal circumstances.

2. Recently, the Ministry of Education has made a principle for the start of the new semester, and three standards must be met before considering the start of the new semester.

First, the basis of the epidemic has been manipulated. To put it bluntly, the manipulation of foundations is judged by the state, and the actual situation of disease prevention and control at the county level will be accurate.

Second, with the development of society, parents feel, or most of them are willing to say, that it is safe to start a new semester now.

Third, the supply and standards of necessary prevention and control materials are timely after the start of the new semester. With these three standards, we will consider when to start school.

Online education is still adopted at present. In content, online education should be all-round. In addition to language, mathematics, foreign languages, history, geography, health and other courses, there should also be patriotic education, basic knowledge of anti-epidemic and epidemic prevention, environmental education, environmental health and cultural education, family and outdoor activities, art appreciation and workers' cultural education to enrich the contents of various courses.