Training is based on the students ability to absorb and perform each lesson. There is no required amout of time before advancing other then the time required to show physical and mental ability. This is will be different for each student.
Each student starts at the beginning regardless of past martial arts experience in Wing Chun or any other arts. The system is taught in Forms referenced levels. At the beginning of each level the basics are taught. As the basics are learned the form for that level is introduced.