To earn an ISA Certified Arborist credential, you must be trained and knowledgeable in all aspects of arboriculture. ISA Certified Arborists must also adhere to the Code of Ethics that strengthens the credibility and reliability of the workforce.

This certification covers many topics, giving the candidates flexibility in the arboricultural profession. Continuing education is an integral part of becoming and remaining ISA Certified.

Jeff Doyle has completed and passed the 30 modules below and is now certified through June 30, 2027.

ISA Continuing Education Unit (CEU) Report For Jeff Doyle

  • Arborist News (Protect Your Assets Part 1)

  • Considerations for Installing Cables in Trees

  • Wood Decay Fungi Identification and Management

  • Pruning Cuts: Best Management Practices—Tree Pruning, 3rd Edition

  • The Surprising Benefits of Biodiversity CEU Quiz

  • Tree Defect Identification CEU Quiz

  • Stationary Rope System Climbing, Part 1: Anchors and Equipment CEU Quiz

  • Stationary Rope System Climbing, Part 2: Ascent and Working with SRS CEU Quiz

  • Undercover: Understanding Native Wood-Borers CEU Quiz

  • Performing Soil Assessments CEU Quiz

  • Boldly Planting for The Next Generation CEU Quiz

  • Integrated Vegetation Management Control Methods CEU Quiz

  • Sonic Tomography for Tree Risk Assessment CEU Quiz

  • You Need to Assess Soil and Here is How to Do It! CEU Quiz

  • Introductory Guidelines for Cabling and Bracing CEU Quiz

  • The Big Five and Urban Decay Ecology CEU Quiz

  • Beneficial Insects in the Urban Landscape CEU Quiz

  • Administering Tree Injections CEU Quiz

  • They Are There in Green and White: Variegated Trees Have Their Place

  • Trees and Construction—The Design Phase CEU Quiz

  • Best Practices for Root Pruning CEU Quiz

  • Tree Roots: A Closer Look at Roots with Secondary Thickening CEU Quiz

  • Assessing Targets, Sites, and Trees for Utility Tree Risk Assessment CEU Quiz

  • Selection, Timing, and Application of Tree and Shrub Fertilization CEU Quiz

  • Utility Tree Risk Categorization CEU Quiz

  • Tree Risk Assessment BMP: Context, Concepts, and Considerations CEU Quiz

  • Tree Risk Assessment BMP: A Closer Look at Target, Occupancy Rate, and Likelihood of Impact CEU Quiz

  • Taking an Ecosystem Approach to Tree Management CEU Quiz

  • Heartwood, Part I: Biology, Formation, Identification, and Importance CEU Quiz

  • Tree Inventory BMP: Planning a Successful Tree Inventory, Part 1 CEU Quiz