The ICF Credentialing Study is being revamped to reflect the changes made by the ICF.

What is being said about the Rayner Institute ICF Credentialing Study Guide
Hi Mark,
Just wanted you to know that I passed the CKA exam…yippee!!!
Your program played a key role in my success by teaching me how to actually take the exam; kinds of questions asked, pitfalls to beware of; and other valuable tips.  It was completely worth it!!  I’d have to say, honestly, that your CKA program is better than the 2-year ACPT coaching program I took when it comes to preparing for the ICF exam. 
With appreciation,
Kendal
Hi Mark and staff
I have to say this was the best course I have ever taken. First, it made me feel safe to take the ICF test and second it gave me the confidence. Watching the video's and doing the practice test at first I thought was really great. Once I was into the exam with the ICf  I realized how prepared your program made me based on the question the ICF was asking. It was treasure finding your program. I also want you to know I passed and I owe it to you and your program.  
Thank you
Richard