The dimensions of Supervision I and Supervision II will be elaborated on in greater detail in the chapters which follow. At this point it is important to recognize that while a conceptual distinction between Supervision I and Supervision II is drawn the two emphases represent two distinct continua. Thus, the idea is not to emphasize one at the expense of the other but to provide a balance of emphasis on both dimensions. A well-thought-out curriculum, for example, combined with a professional development program designed to provide teachers with understandings and skills in using teaching models is as much a part of Supervision II as of Supervision I.