There are specific grade levels which a student must move through in order to complete training in this method.The key principle behind this method of instruction is that basic ballet technique must be taught at a slow pace, with difficulty progression often much slower than the rest of the methods. The idea behind this is if a student is to put in a large amount of effort into perfecting the basic steps, the technique learned in these steps allow a student to utilize harder ones at a much easier rate. More Info below.