The image I usually think of is associated with sports. In particular with my own sport which is football. The coach is the person who at the beginning of the season you despise as they put you through numerous fitness sessions and by the end of the season you share jubilation with as you win each game. There is a specific goal to be achieved and they are with you the whole way directing you to improve your game.
|Here is a photo of my old football coach letting us use him as target practice.|
However, in educational terms a coach has quite a different set of skills. Coaching is a process that allows you the "Coachee" to meet your goals. A coach does not tell you the answer to your problem or even offer a suggestion, they are simply there to guide you through a process.