Peer coaching has been identified as a methodology for increasing teacher effectiveness. This paper discusses the topic of peer coaching in three parts. First, a review of current literature on peer coaching defines the types of peer coaching and discusses their multiple benefits. The second section considers the factors influencing successful implementation of peer coaching programs. The final section of the paper shows the role of peer coaching in three, long term, staff development programs conducted by the authors. A matrix of the programs and an accompanying checklist identify the key factors in program design and implementation, thereby providing data for potential replication of the peer coaching methodology. (Author)