Hi, I'm David.
I founded JobTestPrep over 30 years ago after completing my Master's in Psychology with a focus on psychometric testing. My goal was straightforward - give candidates the tools to take control of their own preparation, reduce test anxiety, and walk into any assessment performing at their best.
The ICC plumbing certification exams covered on this page - P1 Residential Plumbing Inspector, P2 Commercial Plumbing Inspector, and P3 Plumbing Plans Examiner - are professional code-application exams that test your ability to locate, interpret, and apply specific IPC and IRC provisions quickly and accurately under time pressure. They are not tests of field experience. Candidates with decades on the job fail regularly because navigating a code book under a 2-hour time limit is a distinct skill that requires deliberate practice to develop.
My background in psychometric assessment methodology directly informs how JobTestPrep designs its licensing PrepPacks - calibrated to be harder than the real ICC plumbing exam by design, with timed simulations, detailed code-section explanations, and topic-specific drills built around the question types and cognitive demands these exams actually measure. Over three decades, we have helped thousands of candidates prepare for professional licensing and certification exams across the United States and fulfil their goal of becoming certified plumbing inspectors and plans examiners.
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