GED Test: Official Details, Cost, Subjects, and What to Expect on Test Day

What This GED Exam Actually Certifies

The General Educational Development (GED) isn't one test — it's four. Pass all four subject tests (Mathematical Reasoning, Reasoning Through Language Arts, Science, and Social Studies), and you earn a credential that states recognize as equivalent to a high school diploma. Employers, the military, and most colleges treat it the same way they'd treat a diploma from a traditional high school, though a handful of selective four-year programs still ask about the circumstances behind it during admissions.

The GED is administered by GED Testing Service, a joint venture between the American Council on Education (ACE) and Pearson VUE. That partnership matters practically: Pearson VUE runs the testing centers and the online proctoring system, while ACE brings the academic credibility that gets the credential accepted nationwide.

Who This GED Exam Is For (and Who It's Not For)

The GED is built for adults who left high school without finishing — whether that was years ago or a few months ago — and now need a credential for a job application, a military enlistment, or a college application. It's also common among adult English-language learners and people completing coursework through corrections or workforce programs.

It's not the right fit for everyone still enrolled in school. Some states restrict GED testing to people who are no longer enrolled in a traditional high school program, and 16- and 17-year-olds usually need documentation (withdrawal paperwork, parental consent, sometimes a waiver) before a testing center will schedule them. If you're currently on track to graduate from a regular high school program, finishing that diploma is almost always the better path — a GED is a substitute, not a shortcut.

GED Exam Format and Structure

Each of the four subjects is scheduled and paid for separately — you don't sit for all four in one appointment unless you choose to. That's one of the more underrated features of the GED compared to older paper-based equivalency tests: you can space subjects out over weeks or months, retake just the one you fail, and never lose credit for the ones you've already passed.

Mathematical Reasoning (115 minutes) is the only subject with a built-in break — a three-minute pause partway through so you can retrieve your calculator if you brought your own TI-30XS. You get an on-screen scientific calculator for most of the test and a formula reference sheet, so the exam is testing your reasoning, not your memory for formulas.

Reasoning Through Language Arts (150 minutes) is the longest subject by a wide margin, and the reason is the 45-minute extended response essay embedded in it. You'll read one or two source passages, then write an argumentative response using evidence from them — this isn't a personal-narrative essay, and going off-topic from the source texts costs you points regardless of how well-written the response is.

Science (90 minutes) runs as a single unbroken section with two short-answer items you're expected to budget about ten minutes each for.

Social Studies (70 minutes) is the shortest test and the one most people report finishing with time to spare — though "shortest" doesn't mean "easiest," since it leans heavily on interpreting documents, graphs, and short excerpts rather than recalling historical facts.

Across all four subjects, expect a mix of traditional multiple choice with newer "technology-enhanced" item types — drag-and-drop, fill-in-the-blank, hot-spot (click the correct part of an image or graph), and drop-down menus embedded in a sentence. If your only reference point is a paper-and-pencil standardized test from years ago, budget extra practice time just for getting comfortable with the on-screen interface itself.

Domains and Topics Covered

Mathematical Reasoning splits into two content areas with a published weighting: quantitative problem solving covers roughly 45% of the test (fractions, ratios, percentages, measurement, basic geometry, data interpretation), and algebraic problem solving covers the remaining 55% (linear equations, inequalities, systems of equations, functions). That 55/45 split toward algebra surprises a lot of test-takers who assume the math test leans arithmetic-heavy.

Reasoning Through Language Arts draws 75% of its reading passages from informational/nonfiction texts (including science- and social-studies-adjacent material and workplace documents) and 25% from literature. The language and editing portion tests grammar, sentence structure, and usage in the context of revising a passage — not isolated grammar-rule questions.

GED Testing Service publishes exact weightings for Math and RLA in its educator assessment guides; Science and Social Studies are described by content area rather than percentage breakdown.

Cost Breakdown

There's no single national GED fee — each state (or, in a few cases, each testing jurisdiction within a state) sets its own per-subject price. Most states charge somewhere between $30 and $40 per subject, which puts the full four-subject total around $120–$160 if you pass everything on the first try. A few states subsidize the fee heavily or fully; others, including some in the Northeast, run higher due to added administrative charges at the testing center level.

Because you pay per subject rather than for the whole battery at once, a failed subject means paying the fee again for a retake — though many states waive or discount fees for the first one or two retakes, sometimes with a required waiting period between attempts. Check your state's adult education agency or GED.com's state-by-state pricing page before registering, since this is one of the details that changes most often and varies most by location.

Prerequisites and Eligibility

There's no coursework requirement and no need to prove a certain grade level was completed — the GED exists precisely for people who didn't finish that path. Age is the main gate: most states set the standard minimum at 18, but allow 16- and 17-year-olds to test under specific conditions, which commonly include written parental or guardian consent, documentation that the student has formally withdrawn from high school, and sometimes a waiver from the local school district. These rules vary enough by state that it's worth checking your state's requirements directly before assuming you're eligible.

How the Exam Is Scored and What Passing Requires

Each subject is scored on a scale of 100 to 200, and 145 is the passing threshold — on every subject, individually. A 200 on Science doesn't offset a 130 on Math; you retake whichever subject falls short. GED Testing Service defines three performance bands above the failing range: a 145–164 earns a standard pass, 165–174 is labeled "GED College Ready" (some colleges will let you skip placement testing with a score in this range), and 175–200 is "GED College Ready + Credit," which a limited number of colleges use to award actual course credit. Not every school recognizes the higher bands the same way, so it's worth checking with a specific college's admissions office rather than assuming credit will transfer.

Renewal and Recertification

The GED credential does not expire. Once you pass all four subjects, that's it — there's no continuing education requirement, no renewal fee, and no retesting cycle. If you lose your certificate or need an official transcript years later, you request a replacement through GED.com or your state's issuing agency rather than retesting.

How the GED Compares to HiSET

The closest thing the GED has to direct competition is the HiSET, administered by ETS. A handful of states, Massachusetts among them, use HiSET exclusively instead of the GED, and a number of others offer test-takers a choice between the two. The two exams cover similar ground — math, reading/writing, science, and social studies — but HiSET splits reading and writing into separate sections (five subject areas total, versus the GED's four) and has historically offered a paper-and-pencil option in addition to computer-based testing, which appeals to some adult-education programs and states with limited computer lab access.

A third option, the TASC test, was more common a decade ago but has been phased out in most of the states that originally adopted it — Indiana, for instance, moved from TASC to HiSET. Because state adoption changes over time, the honest answer to "which test should I take" is: whichever one your state's adult education agency or Department of Education currently recognizes, since that's the only version that will actually produce a credential your state issues.

Preparation Timeline

There's a wide range depending on how recently you were in school and which subjects give you trouble. Someone within a year or two of leaving high school with mostly passing grades might reasonably prepare for and pass all four subjects in six to eight weeks, tackling one subject every couple of weeks. Someone returning to formal study after a longer gap, or who struggled with math specifically, often needs three to six months, front-loading time on whichever subject the free GED Ready practice test flags as weakest.

Because you register and pay per subject, there's little cost benefit to rushing — spacing subjects out to actually prepare for each one individually tends to save money on retake fees in the long run.