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Notice of Expiration of Reciprocal ISA Certified Arborist® Agreement

The agreement between the European Arboriculture Council (EAC) and ISA that has allowed EAC credential holders to transfer into the ISA Certified Arborist® program has officially ended due to ISO/ANSI 17024 standard accreditation requirements.


Reciprocal Agreement Between ISA and EAC Expires

The agreement between EAC and ISA, whereby EAC credential holders could transition into the ISA Certified Arborist® program, has officially ended. The ISA Certified Arborist® program is an ISO/ANSI 17024 accredited program. This is viewed as a critical component to ISA’s credentialing success throughout the world. The accreditation sets forth a number of standards with which ISA must demonstrate compliance on an annual basis. In order for ISA to continue to accept EAC transferees into the ISA Certified Arborist® program, the EAC would also need to demonstrate compliance with the ISO/ANSI 17024 standard. The ISA Certification Board voted to end this agreement until a system is established that does not put ISA’s accreditation in jeopardy.


This change will only affect the Certified Arborist transferees, because it is the only credentialing program that is accredited under ISO/ANSI 17024. EAC credential holders wishing to transfer into the Board Certified Master Arborist® or Tree Worker programs will be able to do so provided they meet the prerequisites. It is important to all of us that EAC understands that ISA remains supportive of its goals. ISA is interested in working with EAC on re-instituting this reciprocal agreement once we receive acceptable documentation of program equivalence.


Questions regarding this email or its content can be directed to Kevin Martlage, ISA Director of Certification.



Sheila Beaumier

Director of Member Services & Component Relations

International Society of Arboriculture

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