I am the DAF examiner. I don't know what standard you are talking about. I estimate that listening, reading, writing and speaking should all reach 4 points (Telford's highest score is 5 points), and the total score is 16 (already very high). If so, from scratch, you need 1, more than 200 class hours, which means 5-6 hours of classes every day, and you need more than 8-9 months. Of course, you must listen to the class carefully and recite the words carefully (the vocabulary needs more than 6000). Of course, DAF does not necessarily require all 4 points. Everyone has his own strengths. For example, China students are good at reading, but speaking and listening are weak points, so many people get 4-5 marks in reading and writing, and 3-4 marks in listening and speaking, so they can apply to German universities. In addition, applying for a university depends not only on grades, but also on a large part of luck, that is, on the scores of other applicants. If the scores of other applicants are not high, such as the total score 13- 14, then you can use 14- 15 to get in.