Has the graduate school issued a social security card to calculate the number of years?

First, full-time graduate students, those three years are not counted as working years. Military school should calculate the length of service.

Second, part-time graduate students study while working, and their job is to formally pay social security. And calculate the length of service.

The third type, on-the-job graduate students, pass exams after work, attend public schools, and pay social security normally. , calculate the length of service.