The ATI-R and the TPI are brought together here in order to provide insight into the perspectives instructors take on their teaching and to assess the impact of the ISW on participants’ conceptions of teaching. [...] For the eight-item version of the Transmission subscale, the range of possible scores is 5 to 40, and for the seven-item version of the Developmental subscale, the range of possible scores is 5 to 35. [...] For example, we expect a significant decrease in the ITTF approach to teaching from the beginning to the end of the ISW program for the ISW group, but not for the non-ISW group. [...] This finding indicates that there was a consequential change for the ISW participants from the beginning to the end of the program away from viewing the role of the teacher as the expert and sole source for the provision of course information (i.e., the “sage on the stage”, King, 1993, p. 30). [...] To be able to compare the descriptive statistics of these two subscales to the other TPI subscales, each of which is composed of 9 items, the means and standard deviations adjusted to reflect 9-item versions of the two subscales are provided in parentheses below the unadjusted means and standard deviations.