I've been wanting to become a certified arborist as I believe tree care is a vital part of the industry. The professionalism it shows and also the added revenue. Those who are certified, would you please shine a light on the subject? I was just visiting their site and reviewing qualifications. I have the # years in the industry needed and the educational background. I see if you are an ISA member you pay about $100 less to take the exam. The site lists numerous books for study material.......which are the ones I should really consider? How is the test? I don't know, I'm just looking to gain any information on the exam, the certification and how it works for you in the industry. Thanks!