My children have used 10 1 online school for 2 years, and the effect is good. Teachers teach in simple terms, and children can go home and listen to courses that they don't understand at school. The key is that you can listen to it repeatedly, and there is no time limit. Ask the teacher the questions you can't do in your homework, and you can answer them in about 10 minutes. Convenient and timely. At the same time, it also analyzes weak knowledge points for children and explains them. Since the child went to the online school of 10 1, his grades have improved significantly.