Pre-service teachers often perform poorly on high-stakes state certification exams. Noting that there were a few particular items and concepts that seemed to be the most problematical, the authors developed a n HTML and flash-based tutorial CD that contained supplementary video and reference materials designed to assist the prospective teacher in preparing for the exam. Research subjects were studied for their preparation for self-regulated learning, as well as language environment, content background, and other factors. Data from scores on the teacher certification exam was correlated with CD use and demographics to identify the effectiveness of the CD tool as an aid for various categories of learners, including non-native speakers of English.