ISA AM study guide
ISA AM · Work through your exam, one topic at a time.
The ISA Municipal Specialist is one of the specialty credentials offered within the International Society of Arboriculture's credential program, which ISA describes as helping consumers identify qualified, knowledgeable tree care professionals. It is aimed at arborists and urban forestry staff who plan, manage, and defend public trees - municipal foresters, parks and public works crews, contract administrators, and consultants serving local government. Candidates typically already hold or are working toward ISA Arborist certification and want to demonstrate depth in the public-tree context, where decisions must survive budget scrutiny, elected-official review, and liability exposure. The exam is delivered in four domains of equal weight: municipal arboriculture; tree biology and health; tree risk assessment and management; and municipal tree programs and policy. The ISA AM study guide has 4 sections and about 1,448 words.
01Municipal Arboriculture: Public Tree Ownership, Operations, and Standards
Municipal Arboriculture tests how an arborist manages trees as public infrastructure: who owns them, how work is authorized, and how operations meet professional standards. Public trees are those on municipal land: street rights-of-way, parks, campuses, cemeteries, and flood-control areas.
354 words, about 2 min02Tree Biology and Health: Growth, Defense, and Site Diagnosis
Tree Biology and Health tests the physiology behind tree responses: how trees grow, defend wounds, obtain water and minerals, and decline when site conditions change. Secondary growth comes from the vascular cambium: xylem inward, phloem outward.
355 words, about 2 min03Tree Risk Assessment and Management: Targets, Ratings, and Mitigation
Tree Risk Assessment and Management tests a repeatable process: define the target, assess likelihood of failure and impact, rate consequences, and choose mitigation proportionate to risk. Risk combines likelihood of failure, likelihood of impact, and consequence.
371 words, about 2 min04Municipal Tree Programs and Policy: Building a Durable Program
Municipal Tree Programs and Policy tests how to build a durable program: inventory, plan, ordinance, budget, staffing, public engagement, and measurement. The program cycle is inventory and baseline data (species, size, condition, location), a management plan with goals such as canopy cover, age diversity, and risk reduction, then ordinance and policy, budget and staffing, implementation, and monitoring.
368 words, about 2 min