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New Exam Outline for the ISA Board Certified Master Arborist® Credential

The International Society of Arboriculture (ISA) has updated the exam outline for the ISA Board Certified Master Arborist® credential. The updated exam outline and domain weights for the credential’s examination will be effective 15 December 2025. These changes follow the most recent Job Task Analysis for the program conducted in accordance with international standards for certification programs. Read the full press release here

 

Image Database

ISA has a vast inventory of arboriculture- and urban forestry-related images that were compiled with the help of our members and volunteers.

Through a partnership with Forestry Images, ISA has thousands of photos and graphics available for use. ISA either owns the photos or has permission to permit their use.

Access the Image Database to browse the collection of images.

International Tree Climbing Championships

Press Releases

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