There are different theories of how mentoring can be organised. Two different approaches which make an interesting comparison are Joyce and Showers and Curee.
The Joyce and Showers model is one of peer coaching and, although from 1980s, is still relevant. Their research was on which method of learning has the most effect on practice and an article on their research findings can be found here.
The National Framework for Mentoring and Coaching 'Mentoring and Coaching CPD Capacity Building Project' uses Curee to define differences in coaching and mentoring which can be found here. However, be aware organisations each interpret these terms differently! It does provide a useful structure for the conversation though.
Examples of how theories have been used in different practices are given below:
The Association of Colleges in the Eastern Region (ACER) also carried out an evaluation of a DfES programme of work which looked at initial teacher training and mentoring. Its findings can be read here.
The Ofsted Report 'Teaching, Learning and Assessment in further education and skills - what works and why' published in September 2014 summarises the most significant features of outstanding teaching, learning and assessment in the further education and skills sector and the factors that contribute to these, including mentoring. It can be read here.
Ofsted 'Using Mentors to Improve Learning' published in January 2013 as part of their Good Practice guidelines shows how Leicester College use mentoring effectively to improve learning. It can be read here.
Introduction to Mentoring/Coaching course. A short introduction to Mentoring/Coaching course is offered by the Teacher Education team, Centre for Lifelong Learning at Warwick University. Details here.