The 2 Sigma Problem: The Search for Methods of Group Instruction as Effective as One-to-One Tutoring

  title={The 2 Sigma Problem: The Search for Methods of Group Instruction as Effective as One-to-One Tutoring},
  author={Benjamin Samuel Bloom},
  journal={Educational Researcher},
  pages={16 - 4}
  • B. Bloom
  • Published 1984
  • Psychology
  • Educational Researcher
T w o University of Chicago doctoral students in education, Anania (1982, 1983) and Burke (1984), completed dissertations in which they compared student learning under the following three conditions of instruction: 1. Conventional. Students learn the subject matter in a class with about 30 students per teacher. Tests are given periodically for marking the students. 2. Mastery Learning. Students learn the subject matter in a class with about 30 students per teacher. The instruction is the same… Expand
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