Where our facts come from
Every claim we make about the GED test itself (the number of questions, the time limit, the calculator rules, the passing score, what is on the formula sheet) comes from material published by GED Testing Service or the American Council on Education. That means the Assessment Guide for Educators, the GED Policy Manual, the official Mathematics Formula Sheet, and ged.com.
Each of those claims carries a link to its source and the date we last checked it. If you find a page here without one, that is a bug and we would like to hear about it.
What we do when the official record is silent
This matters more than it sounds. GED Testing Service does not publish a table converting raw answers into the 100–200 scaled score. It does not publish current pass rates by subject. It does not document whether you can return to the no-calculator section after moving on.
Where the record is silent, we say so rather than filling the gap with a confident number. When we give an estimate, we show the arithmetic behind it and label it an estimate. A page that tells you exactly how many questions you can miss is guessing, however precise it sounds.
How the practice questions are made
We do not have real GED questions, and neither does any other practice site, because live test items are secure. Ours are original, and they are generated rather than stored: each question is built from scratch when you press start, with its own numbers, context, answer choices and worked solution.
Because the question and the answer are computed together, the key cannot drift out of step with the question. On top of that, every generator is run through an automated check across thousands of seeds before it ships. That check fails the build if any question has no correct option, duplicate options, a missing explanation, or an answer outside the allowed range.
Questions are written against the official content indicators in the Assessment Guide, so the skills and formats line up with the real test even though the wording is entirely ours.
Who writes this
Lessons and explanations come from our teaching team; see the about page for who that is. We do not publish invented credentials, and where a reviewer has not yet checked a page we do not claim one has.
Corrections
If you find a wrong answer, a broken explanation or an out-of-date fact, tell us and we will fix it and note the change. Mathematics has the useful property that mistakes are provable: if you can show the working, you are right and we will change the page.
How we make money
The practice tests, explanations, formula sheet and study guide are free and are not gated behind an account. We sell a video course, and we say so plainly where we mention it. We do not take payment to recommend anyone else’s product, and no page here is sponsored.