classes: lecturer. At least 3 weeks of theoretical practice will be completed before the next class, so you should rearrange the practice time or choose the content of practice to suit the theoretical progress in class. curriculum. At least 3 weeks of theoretical practice will be completed before the next class, so you should rearrange the practice time or choose the content of practice to suit the theoretical progress in class. facility. At least 3 weeks of theoretical practice will be completed before the next class, so you should rearrange the practice time or choose the content of practice to suit the theoretical progress in class. general. At least 3 weeks of theoretical practice will be completed before the next class, so you should rearrange the practice time or choose the content of practice to suit the theoretical progress in class.