There are various scoring systems used domestically, such as the percentage system, 4.0 system, 5.0 system, XX school system, and so on. If there is no unified measurement system, it is difficult for us to refer to the admission standards provided by American schools and the admission data from previous years. Therefore, we need to convert domestic grades. It is not only convenient for us to objectively evaluate our GPA, but also for us to fill in a reliable score in the online application.