The good thing about continuous lighting is that you can see the results in "real time".
Studio lighting is sort of sculpting with light. A flash can give good results but you can't really fine tune the highlights and shadows to emphasize or de-emphasize particular aspects of the subject -- to get those subtle tonal gradiations that impart a greater three-dimensionality to a flat photograph.
This is what they are trying to teach you in class with the light setup.
Now, if you already have a multi-flash lighting arrangement, you can certainly use it, but your results will be more trial-and-error than if you use continuous lighting. A strobe setup is best used after you have learned the basics of studio lighting.