The Handbook for FSB Peer Reviews (Handbook) was originally prepared in December 2009 by the FSB Standing Committee on Standards Implementation (SCSI) to develop a framework for FSB peer reviews. In 2011, the SCSI conducted a review of experience with FSB peer reviews in order to identify lessons drawn from reviews undertaken and to make recommendations to improve the functioning of the peer review programme; the recommendations have been incorporated in this document. The Handbook was further revised in January 2014 and February 2015 in response to SCSI members’ suggestions on ways to further enhance the functioning of peer reviews.