Jerry
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Educational Researcher
The 2 Sigma Problem: The Search for Methods of Group Instruction as Effective as One-to-One Tutoring (1984 pdf)
Bloom's 2 Sigma Problem
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Bloom's 2 Sigma Problem
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Benjamin Bloom
The 2 Sigma Problem: The Search for Methods of Group Instruction as Effective as One-to-One Tutoring (1984 pdf)
Children
"the Average Tutored Student Was above 98% of the Students in the Control Class"
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One-on-One Tutoring Can Raise Kids Two Sigmas