My approach is to create what I consider a minimum baseline in class (as best I can with the limited amount of time I'm available to them). So there's some fitness and some drilling in class that can also be done outside class. This lets me have an absolute minimum expectation of what they are working on. If they do what I recommend outside class, they'll move at a normal pace. If they do less, they'll progress slowly. If they do more, they'll likely progress more quickly.Most people who train a martial arts won't do this on a consistent basis. I put it this way. I don't count on it or factor it in anymore and I schedule class training as if they don't train at home, or on their own time.