Now the pass rate of self-study exam is poor. If the credibility of the self-study exam is better, if you go to an institution, there will be many cases of being cheated. But I still believe it or not, many people have got their diplomas. It's not so difficult to take the self-examination in the examination institution, but it will be easier. If you feel that you have worked hard in the exam, you can choose to go to a public institution, so as not to delay your work, and you can also get a diploma from the exam.