When Bloom compared the performance of students in each group, the results were astounding. Students in the traditional classroom performed exactly like you would expect if you believed in the notion that faster equals smarter: by the end of the course, roughly 20 percent achieved mastery of the material (which Bloom defined as scoring 85 percent or higher on a final exam), a similarly small percentage did very poorly, while the majority of students scored somewhere in the middle. In contrast, more than 90 percent of the self-paced students achieved mastery.
