Free ISA Arborist Practice Tests (2026)
Start with the free diagnostic to see where you stand, then practice in tutor or timed mode. Full-length simulations match the real ISA Arborist.
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ISA Arborist Practice Test 1
10 questions · 11 min10 free ISA Arborist practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
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ISA Arborist Practice Test 2
10 questions · 11 min10 free ISA Arborist practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
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10 questions · 11 min10 free ISA Arborist practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
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10 questions · 11 min10 free ISA Arborist practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
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10 questions · 11 min10 free ISA Arborist practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
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10 questions · 11 min10 free ISA Arborist practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
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10 questions · 11 min10 free ISA Arborist practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
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10 questions · 11 min10 free ISA Arborist practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
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10 questions · 11 min10 free ISA Arborist practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
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10 questions · 11 min10 free ISA Arborist practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
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10 questions · 11 min10 free ISA Arborist practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
Start testISA Arborist Practice Test 12
10 questions · 11 min10 free ISA Arborist practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
Start testISA Arborist Practice Test 13
10 questions · 11 min10 free ISA Arborist practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
Start testISA Arborist Practice Test 14
10 questions · 11 min10 free ISA Arborist practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
Start testISA Arborist Practice Test 15
10 questions · 11 min10 free ISA Arborist practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
Start testHow these ISA Arborist practice tests match the real exam
The real ISA Certified Arborist Exam has 200 questions and a 210-minute time limit. Question types: Multiple choice only: each question has four answer choices with exactly one correct. 20 of the 200 questions are unscored pretest items, unidentified and scattered through the exam. Each practice test here uses the same question formats, so you get used to how ISA Arborist questions are asked before test day.
The tests draw on every ISA Arborist content area, weighted like the official outline:
- Tree Biology (about 11% of the exam)
- Tree Identification and Selection (about 9% of the exam)
- Soil Management (about 7% of the exam)
- Installation and Establishment (about 9% of the exam)
- Pruning (about 14% of the exam)
- Diagnosis and Treatment (about 9% of the exam)
- Trees and Construction (about 9% of the exam)
- Tree Risk (about 11% of the exam)
- Safe Work Practices (about 15% of the exam)
- Urban Forestry (about 6% of the exam)
Use tutor mode to see the explanation after each answer, or timed mode to practise at real exam pace. Every answer comes with an explanation of why it is right and why the other options are wrong.