Abstract
Walstad reports on a master of instruction program for teachers of pre-college students. Comparisons between different groups of students (i.e., teachers in the program, regular intermediate theory students, …) indicate that the program appeared to meet its cognitive and attitudinal objectives. The study, however, raises serious questions about the effectiveness of instruction at the intermediate level and about the economic understanding of pre-college economics teachers (less than or equal to the college principles students included in the study).