You are right that there are to many coaching schools which offer 2-3 day / 1 month courses with their own certification. Or worse, too many people call them selves coaches without any education. Unfortunately the market is filled with this coaches and people get disappointed and lose their trust in coaching.
In order to find a qualified coach, look for ICF or EMCC qualified coaches. This are 2 of the biggest institutions:
For example, coaches who are ICF certified will have the title ACC, PCC or MCC.
E.g. My certification program is recognized by the:
1. European Mentoring and Coaching Council (EMCC) at Practitioner level
2. International Coach Federation (ICF) as ACSTH program for 140 hours.
My next Level is to get ACC title, which is acquired through experience that I will have to prove + mentoring hours.
In the end a good coach is one that is:
a) genuinely interested in peoples well being
b) follows the code of ethics (e.g. ICF http://coachfederation.org/about/ethics.aspx?ItemNumber=854&navItemNumber=634
d) and has the skills to be a coach
The difference is that the Psychologist is trying to fix something broken, he looks in the past, is problem-solution oriented, while a coach considers that the client is whole, creative and capable and will focus on the present to create a better future. Coaching is action oriented.
So this are 2 very different approaches with different aims.
Have you ever experienced coaching?