I entered the exam only because it is reliable. I studied it for a long time. If nothing else, the tuition is really affordable. I also went to the school in official website to check. This is authorized by the official school and paid after service. I paid 80% of the data fee for the entrance exam. I didn't feel the service was bad until now. My teacher is really considerate. Before applying, she also told me clearly that the fee was only tuition. The entrance examination fee (I went to official website directly, paid by the Institute of Education) and finally the graduation fee. I really didn't find any arbitrary charges. Besides, I can really get a refund at any time before I register. My friend and I applied at the same time. He applied for the self-study exam, but it was too difficult to learn, so he gave up, and then he got a refund. If nothing else, I am afraid that the money will be cheated. I am more relieved to see my friend return the money.