The Transition to Teaching (TTT) program is described in Part C, Innovations for Teacher Quality, Subpart 1, Chapter B of the "No Child Left Behind (NCLB) Act." Its purposes are "(a) to recruit and retain highly qualified mid-career professionals (including highly qualified paraprofessionals) and recent graduates of an institution of higher education (IHE), as teachers in high need schools, including recruiting teachers through alternative routes to certification; and (b) to encourage the development and expansion of alternative routes to certification under state-approved programs that enable individuals to be eligible for teacher certification within a reduced period of time, relying on the experience, expertise, and academic qualifications of an individual, or other factors in lieu of traditional course work in the field of education." TTT participants are required to teach in high need schools in high need school districts for at least 3 years. To meet the analysis and reporting goals of the TTT program and the evaluation, visits to eight distinctive sites were conducted during the fall and winter of 2004-05 to obtain a micro-level view of the development and implementation of individual projects. The site visits provided insights into the design and day-to-day implementation of the components of TTT projects. This report delivers an overview of the site visit component of the TTT evaluation. Specifically, it does the following: (1) Describes the process that was used to select the eight sites and provides a snapshot of each; (2) Discusses major themes that emerged from the data and relates them to the literature on alternative certification programs; and (3) Presents case studies of the sites that highlight the distinctive approaches used across the United States. (Contains 2 exhibits and 43 endnotes.)