The 2 Sigma Problem: The Search for Methods of Group Instructions as Effective as One-to-One Tutoring
Publish Date: 24-06-1984
Author(s): Benjamin Samuel Bloom
Synopsis: Individualized instruction lifted outcomes by 2 standard deviations — outperforming 98% of regular students. But “too costly for most societies to bear on a large scale".
Ahead Link (paywall):
Orgs:Edit | Back