The concept of peer tutoring is not new. Its use has been traced back through centuries. Probably all elementary school teachers have used it at some time-usually in the brief, informal situation of having Billy help Jimmy with some specific problem or skill need. In recent years, the idea has expanded and the more formal peer-tutoring or peer-mediated instruction concept has received attention and support. This increased interest in peer-tutoring appears to have been prompted by the need to individualize instruction and to do so as economically as possible.
Howell, H. (1979). Peer-Tutoring: Learning Boon or Exploitation of the Tutor?. Reading Horizons, 19 (3). Retrieved from https://scholarworks.wmich.edu/reading_horizons/vol19/iss3/12