You can take the exam directly or buy it directly. It depends on where you are. It seems that it is easier to go anywhere except Shenzhen. If you really want to take the exam, you have to have high school knowledge as the basis (I saw that some textbooks of Shenzhen Intermediate electrician training involve university knowledge), so it's hard to say. I suggest that if allowed, you can buy one, only a few hundred yuan more. Instead, you saved the study fee and so on. To tell the truth, I don't agree with you studying at school. After all, the electrician business depends on experience.