This document discusses peer tutoring as an instructional method. It defines peer tutoring as a system where students teach other students who are at a similar age and skill level. There are several types of peer tutoring described, including instructional tutoring where older students coach younger ones, monitorial tutoring where students lead small groups, and pair tutoring where students of equal age help each other. The document also outlines characteristics and limitations of peer tutoring, and provides recommendations for effective implementation such as carefully selecting tutors and providing feedback.