International Society of Arboriculture
Board-Certified Master Arborist
The ISA Board Certified Master Arborist® credential is the highest level of certification offered by ISA. This credential recognizes ISA Certified Arborists® who have reached the pinnacle of their profession. In addition to passing an extensive scenario-based exam, candidates must abide by a Code of Ethics, which ensures quality of work. Fewer than two percent of all ISA Certified Arborists® currently hold this certification.
American Society of Consulting Arborists
ASCA represents Consulting Arborists—the authoritative experts on trees, and whose objective, comprehensive viewpoint ensures the safety, health, and preservation of trees. Our members’ extensive level of knowledge and experience makes them highly sought after by consumers, professionals, and other arborists.