The quality of courses in Global Online School is good. As one of the well-known construction engineer training institutions in China, firstly, it has strong teachers, reliable teaching materials, after-sales service and learning tracking. Secondly, the course is rich in content, flexible in teaching form, and flexible in learning time, place, times and IP restrictions. In addition, there is a perfect training service system and high-quality customer service, so I think the course of Global Online School is still good.