Shanghai Conservatory of Music takes the grade examination twice a year, in August and June, 1, and the grade examination books are changed once every two years. If it is difficult, it is no problem to practice hard. There is no rule on how many grades to take the music theory test. Here's the thing. For example, you took the 10 grade, but you have to take the basic music theory to get the certificate. Music theory can sign up for a training class, which is not difficult.