Quality starts with...
...who wrote the material.
Our practice exam writers:
Ray Holder
is a Certified Electrical Trade Instructor & Electrician License Exam Expert. Ray Holder has worked in the electrical industry for over 45 years as an apprentice, journeyman, master, field engineer, estimator, business manager, contractor, inspector, consultant and instructor.


Dodge Woodson
was a master plumber and gas fitter for over 30 years. In addition to being a field plumber and contractor, Woodson served as adjunct plumbing licensing faculty at Central Maine Technical College. As R. Dodge Woodson, he is a best-selling author and is the most prolific plumbing author in print with McGraw-Hill. He is often referred to as America’s Plumber.


Charles Redecker
is a master plumber instructor and education director with the National Center for Construction Education and Research.  Charles has taught plumbing with the NCCER for over 10 years.


Terry Lunt
is a plumbing and master craft instructor with Associated Builders and Contractors in Southern California. He has also been a core curriculum instructor and subject matter expert in plumbing with the National Center for Construction Education and Research.


HVAC Professionals
at HVAC Excellence, The Leading HVAC Authority. The questions are based on industry standards and offer a comprehensive coverage of the fundamental subject matter found on most HVACR certification exams.


Edward Bohnart
is an AWS certified master welder and welding educator who has over thirty five years of experience in the welding industry. He has served as a Board member of the American Welding Society for over a decade and was its National President from 1995 – 1996.Ray Holder is a Certified Electrical Trade Instructor & Electrician License Exam Expert. Ray Holder has worked in the electrical industry for over 45 years as an apprentice, journeyman, master, field engineer, estimator, business manager, contractor, inspector, consultant and instructor.


John Howley, Jr.
is a certified carpentry instructor from Homosassa, Florida. John was head of the carpentry department and taught carpentry at a technical high school for over twenty years. He taught rough carpentry, finish carpentry, millwork and cabinet making.

IndustrySchools.com is a company which helps contractors pass their licensing test.   They have contractor licensing preparation kits and live support for 47 licensing categories including:

  • General Building
  • General Engineering
  • Plumbing
  • HVAC
  • Carpentry
  • Welding
  • Electrical
  • more.