Bloom and Block suggested refinements in testing methods and the delivery of feedback, but their basic principles came straight out of the Winnetka Plan. Students learned at their own pace, advancing to the next concept only after reaching a prescribed degree of mastery over the previous concept. Teachers served primarily as guides and mentors rather than lecturers. Peer interaction was encouraged; peers helping peers was of benefit not only academically, but in character-building as well. Some students might struggle, but none were given up on.
