About the Credential

The ISA Board Certified Master Arborist® credential is the highest level of professional certification offered by International Society of Arboriculture. This credential recognizes ISA Certified Arborists® who have reached the pinnacle of their profession, and have demonstrated a mastery of arboricultural knowledge.  In addition to passing an extensive scenario-based exam, candidates must abide by a Code of Ethics, which ensures quality of work.

Fewer than 2% of all ISA Certified Arborists® currently hold this certification.

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