Study Tips & Guides
Expert advice to help you pass your licensing exam
Stop Buying Pre-Highlighted Code Books. The Highlighting Was Never the Point.
On an open-book exam the answers are on your desk. Pre-tabbed books get you to the chapter; only your own tabs get you to the answer in time.
Six AI Chatbots Knew Texas Switched to the 2026 NEC. None of Them Had Read It.
Same nine prompts, six chatbots, one open-book exam that switched code editions on September 1. We graded every fact against the PSI bulletin and every answer key against the 2026 NEC text. They knew the edition changed. They did not know what changed.
We Fact-Checked 6 AI Chatbots on the Illinois Roofing Exam. Four of Them Taught a Wrong Number.
Same nine prompts, six chatbots, one closed-book roofing exam. We graded every fact and every answer key against the Illinois Act, OSHA 1926 and the NRCA Manual. The best mock came with a $50,000 bond that doesn't exist.
We Audit Our Own Practice Exams Every Night. Here's What Got Thrown Out.
Every exam someone buys is re-audited overnight by a solver that never sees the book. The ledger: 73 questions pulled from one pool the morning after a purchase, 5,536 answer keys re-shuffled, 1,364 questions we put back after a roofer proved us wrong - and the exam where we're only tied.
A Roofer Almost Passed a Real Estate Exam Without Studying. That's a Problem With the Questions.
We handed real estate practice questions to a roofer with zero real estate training. He nearly passed. Here is what that says about AI-generated practice questions - and how to spot the ones that teach you nothing.
We Fact-Checked 6 AI Chatbots Against the Plumbing Code. Nearly Half Their Questions Didn't Survive.
Six chatbots, one prompt, 72 practice questions - graded against the 2021 International Plumbing Code. Only 34 survived. Here are the confidently wrong answers, with the real code values.