School online. Online courses are online courses that are learned by electronic devices through the Internet. University courses can be found on the school's website. Xuetang Online is a massive open online course platform initiated by Tsinghua University on 20 13 and 10, and it is also a research exchange and application platform of the online education research center of the Ministry of Education. Curriculum refers to the total number of subjects that school students should study and its process and arrangement.