Aristotle wasn’t wrong
Dozens of studies have shown that tutored students outperform classroom students and self-studiers. In randomized, controlled trials (the gold standard of science) at the University of Chicago, the median tutored student outperformed 98 percent of classroom students.
Ch-ch-changes
Besides increasing test scores, tutoring also changes microstructures of the brain. Studies at the University of California at Berkeley showed 3 months of LSAT instruction “changed white matter microstructure” in brain areas associated with logical reasoning. Tutoring also strengthened connections between the left and right hemispheres of the brain.