The International Society of Arboriculture is an organization that aids Arborists and other tree care professionals with accreditation, research, public awareness, safety information, professional development and much more. To become ISA certified you must first have a degree in a related field and/or three years of professional experience in arboriculture. Then you will be required to take an exam to showcase your knowledge. Don’t worry, there are plenty of study materials, study groups, and practice quizzes available on their online learning portal. Check out their website for more information www.isa-arbor.com