I don't teach anything that isn't leadable in one form or another. The lead and follow concept allows the creation of the two-headed four-legged animal. This is the true oneness on the dance floor that we all are striving to achieve.
About six months ago, I asked one of my female students: "What does lead and follow mean?" Her reply was: "The man does something, then I do something". I suddenly realized that the words "lead and follow" don't work. I also used the words "action and reaction". These words don't work either. The strict interpretation of these phrases causes the ladies movement to be too late.
The ladies action should: "add to the lead", "enhance the lead", "embellish the lead", "power the lead". If the lady waits for the lead to finish, then react; the dancers may as well be dancing freestyle. The lead should not be over before the lady participates.
The reality of leading is that the man initiates the action, the lady continues the action and the man ends the action.
If you were driving a car:
What I am describing is a very high level of leading that is dependent on many other aspects of partnership dancing. The following are very important:
"The movement" I am talking about above, is a pattern element (usually a measure of music). For example in Waltz, a forward hover would be an element in the pattern: triple hover combination.
Words are very powerful in the art of teaching. It is vital for the instructor to use the correct words in order to get the right body response. However, I have had students in the past where I had to use words that were absolutely wrong to get the right body response. I would then have to go back later when they had some muscle memory and correct the words.
The way you think about something will change how your body responds. I have had great success by changing "lead and follow" to "lead and add to the lead".