In this chapter, as in the last one, an ‘ideal type’ is put forward. This time it is of a model to inform planning for teacher preparation, based on an exposition by O’Donoghue and Whitehead (2008). It is not being suggested that the proposed approach is the one that should be adopted in every teacher preparation institution in every country. Rather, it constitutes a model to which one can relate when considering what might be the most appropriate way to proceed in particular circumstances. This is followed by a related informing account, namely, an overview of recurrent themes regarding teacher preparation across a variety of countries.