ISA Certified Arborist Exam Study Guide 2026–2027 | Arborist Certification Prep, Illustrated, 200 Practice Questions (PDF)

ISA Certified Arborist Exam Study Guide

This study guide covers all ten domains of the current ISA Certified Arborist exam. It follows the official domain weights and the ANSI A300 and ANSI Z133 practices the exam is based on.

What's Inside:

• Exam overview: question count (including unscored pretest items), timing, the 76% passing score, eligibility, retakes, and recertification, plus a table and chart of the domain weights
• Content review in 10 sections and 78 topics: soil management, tree identification and selection, installation and establishment, safe work practices, tree biology, pruning, diagnosis and treatment, urban forestry, trees and construction, and tree risk management
• Quick-reference tables and visuals, including a trunk cross-section diagram, a branch-collar diagram showing where to make the final cut, a comparison of pruning cuts, the ISA risk matrices, a chart of where nutrient deficiency symptoms show first, core arborist PPE, biotic vs. abiotic clues, the planting sequence, the aerial rescue sequence, and the stages of tree protection on construction projects
• 2 practice tests with 200 scenario-based questions, weighted like the official exam
• Detailed answer explanations for every question
• Study schedules, FAQs, test-taking strategies, and a final review checklist

Format:

• Digital PDF, 124 pages, instant download
• Printable on US Letter paper

This is an independent study resource. It is not affiliated with or endorsed by the International Society of Arboriculture. ISA Certified Arborist® is a registered trademark of the International Society of Arboriculture.