Did you have a good trip? Looks like you have planned out your regime rather well.
Yes from crotch to floor (clothed)would be a good way to see how we are progressing.
As you said you have class so you have to work around that. You probably do some stretching in class but why not leave 15 minutes for the end of each class for everyone to do stretching. This is what our school does and its great becuase it motivates everyone and also is a nice little time to try some new stretches. It would be a nice change to all the normal stretches that you will be doin over and over again.
Just an idea.