A Certified Master Arborist is the highest level of certification granted by the International Society of Arboriculture (ISA). This designation recognizes extensive knowledge, experience, and expertise in tree care, disease management, pruning, and urban forestry. Master Arborists assess tree health, diagnose problems, develop care plans, and oversee tree maintenance programs. They often work with municipalities, commercial properties, and private clients to ensure the safety and longevity of trees. Achieving this certification requires years of field experience, passing rigorous exams, and ongoing education.