Attempts to measure the impact of Extension programs have been implemented to varying effects for many years. Using data from several economics of personal finance workshops designed to teach high school teachers about a state's new personal finance performance standards, this article reports the results from of one type of evaluation, a retrospective pretest-posttest, that is useful for one-time, short duration workshops where the extra steps and additional costs of traditional pretest-posttest evaluation may not be warranted. A discussion of the benefits of retrospective pretest-posttest evaluations, including reduced response shift bias, concludes the article. (Contains 1 table and 1 figure.)