First of all, parents should understand the reasons for their children's poor grades. Some children's grades have not improved after cram school, and may even decrease. This is because there are many factors behind children's poor grades, which can not be solved by attending remedial classes.
Some children are not good at mathematics, probably because they don't understand the concept of mathematics and their basic knowledge is weak. In this case, if children go to cram schools to check for leaks and fill vacancies, their grades will be significantly improved. But some children are careless, careless in the calculation process, or the answers are not standardized. These situations are related to children's study habits, and parents need to cultivate good habits in their usual study.
After parents understand their children's situation, they can choose online or offline training courses for their children according to their own situation. Online classes have many advantages. The network has no geographical restrictions, and children in third-and fourth-tier cities can also enjoy the high-quality resources of first-tier cities. Moreover, the study time and place are arbitrary, which saves the time for parents to pick up and drop off. The disadvantage is that teachers can't supervise and guide students' behavior face to face, so children with poor self-discipline need the supervision of their parents.