Among the most popular online courses in this pandemic year is one titled How to Learn Online. However, three publicly traded education and training companies also have seen a sharp pickup in their businesses this year. Two are based in Beijing and offer after-school programs for K-12 students, both online and in learning centers across China. The U.S.-based company offers a variety of online services. All three have market caps of more than $10 billion, and all have seen their share prices rise by at least 50% in 2020.