Darling Hammond ideas about TE have been widely discussed. She has written extensively about the issue and has been in many interviews, see e.g.
http://www.edutopia.org/linda-darling-hammond-teacher-preparation
About her book, Darling-Hammond, Linda (2006). Powerful Teacher Education: Lesson From Exemplary Programs. San Francisco, CA: Jossey-Bass.
A book rewiew http://staff.lib.msu.edu/corby/reviews/posted/darling2.htm
Says:
among the common elements [of very different exemplary programmes] Darling-Hammond identifies are 1) coherence based on a common, clear vision of good teaching… 2) a strong core curriculum… 3) extensive, connected clinical experiences that are carefully chosen… 4) an inquiry approach that connects theory and practice… 5) school-university partnerships that develop common knowledge and shared beliefs among school- and university-based faculty, and 6) assessment based on professional standards that evaluates teaching through demonstrations of critical skills and abilities using performance assessments and portfolios…