GED Prep Guide: A Free Plan for the High School Equivalency Test

By Maya R., Test Prep Specialist

The short answer: the best GED prep studies one subject at a time to a clear buffer above the 145 passing line, because the credential requires passing all four subjects separately, not an average. This guide walks through the subjects, the timing, the score bands, and a study plan you can follow at your own pace.

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GED at a Glance

What the GED Actually Tests

The GED is a computer based high school equivalency test made of four separate subject exams. You do not have to take them all at once, and most students schedule them across several days or weeks. Each subject is scored from 100 to 200, and you must reach 145 on each one individually. There is no averaging across subjects, so a strong Science score cannot rescue a weak Math score 1.

The four subjects and their time limits are Reasoning Through Language Arts (150 minutes, including a 45 minute extended response essay and a 10 minute break), Mathematical Reasoning (115 minutes), Science (90 minutes), and Social Studies (70 minutes) 1. A score of 165 to 174 is labeled College Ready, and 175 to 200 may qualify for college credit under a school's own policy 2.

In my years coaching adult learners, the single biggest mistake I see is treating the GED like one big test. It is four small tests wearing a single name. Once you plan them separately, the whole thing feels manageable.

Build a Subject by Subject Plan

A 6 to 10 week plan works for most adult learners, with longer timelines for those rebuilding math or reading foundations. The shape of the plan matters more than its length.

Week 0: Set a baseline

Take a timed practice set in all four subjects to find your starting point. A baseline stops you from guessing where to spend your hours, and it tells you which subject to attack first. The official GED Ready practice test is the closest predictor of whether you will pass on test day 3.

Weeks 1 to 3: Pass the first subject

Pick the subject closest to passing and study it daily. Build a 150 to 155 practice buffer before scheduling, because an exact 145 leaves little room for test day errors. If your practice floats right at 145, you are not ready, even if the number technically clears the line.

Weeks 4 to 10: Move through the rest

Pass one subject at a time. Reading and writing skills transfer across subjects, so the Reasoning Through Language Arts work you did early pays off on the Science and Social Studies reading items later. The SAT reading practice guide covers the close reading habits that help on the GED reading items too.

Subject Tips That Save Time

Reasoning Through Language Arts

Read passages actively and practice the extended response by planning a clear claim and supporting it with evidence from the text. Grammar review helps on the editing items. About 75 percent of the passages are informational and 25 percent are literary, so practice both 4. Spend the first three minutes of the 45 minute essay block planning your claim and evidence, then write.

Mathematical Reasoning

Part of the Math test allows an on screen calculator (the TI 30XS) and part does not, so practice both ways. Algebraic problem solving is about 55 percent of the test and quantitative problem solving is about 45 percent, so algebra deserves the larger share of your study time 4. The no calculator part is where many adults need the most rebuilding, so drill it on purpose.

Science and Social Studies

These subjects reward careful reading of charts, graphs, and experiments more than memorized facts. Science is split across life science (40 percent), physical science (40 percent), and earth and space science (20 percent). Social Studies leans on civics and government (50 percent), US history (20 percent), economics (15 percent), and geography (15 percent) 5. Practice pulling the answer from the figure before reading the choices.

Why a Buffer Above 145 Matters

The 145 line is the minimum, not a target. Test day adds pressure, and a practice score of exactly 145 can drift under that line. I tell every student I coach to treat 155 as the real goal for the first subject, then hold 150 for the rest. That small cushion is the difference between one sitting and a reschedule.

The GED handbook states plainly that you must score at least 145 in all four subjects to earn the credential, and that scores are reported on a 100 to 200 scale with three passing levels 4. The language matters: "passing" is per subject, never overall.

Your Score Report and What to Do Next

After each GED subject, you receive a score report in your account. It shows your score, the skills you handled well, and the skills to work on next. I coach students to read the "skills to work on" list before they book the next subject, because it is effectively a free study plan built from your own answers 3. Use that list to decide which subject to study next, not your gut feeling.

Your Test Day Routine

A calm routine protects the buffer you built in practice. Sleep six to eight hours the night before, eat a real meal, and arrive with your ID and confirmation. For the Math test, know which part is calculator free so you are not surprised when the screen locks it. For the Language Arts essay, spend the first three minutes of the 45 minute block planning your claim and evidence, then write.

After the test

Scores usually post within a few hours, though some take a few days. When they arrive, log the number next to your practice average and note whether your buffer held. If one subject fell short of 145, book the retake while the material is fresh and aim for the 150 buffer next time.

Staying Motivated Across a Long Plan

A long prep plan fails most often in the middle, not at the start. I tell students to set a visible checkpoint after each subject passed, not one distant goal at the end. A small reward or a logged streak keeps momentum when the novelty wears off. You do not need an expensive course to pass. The official GED Ready practice test is the one purchase worth making, because it is the only predictor the score report trusts 3. Everything else can be free and still thorough.

Common Mistakes

• Studying all four subjects at once and spreading attention too thin.
• Scheduling a test at an exact 145 practice score with no buffer.
• Skipping the no calculator Math practice.
• Treating Science and Social Studies as pure memorization.
• Ignoring the extended response on the Language Arts test.

Common Misconceptions

A common belief is that the GED is "easier" than finishing high school. It measures the same skills graduating seniors need, and the College Ready band exists precisely because many test takers fall short of college level work 3. Another myth is that a high score in one subject offsets a low one. The credential requires each subject to clear 145 on its own. A third misconception is that you must take all four in one sitting. You can space them out, and most students should.

Frequently Asked Questions

How many subjects are on the GED?

The GED has four subjects: Reasoning Through Language Arts, Mathematical Reasoning, Science, and Social Studies.

What score do I need to pass the GED?

You need 145 or higher on each of the four subjects individually. There is no averaging across subjects.

How long is each GED subject?

Reasoning Through Language Arts is 150 minutes, Math is 115 minutes, Science is 90 minutes, and Social Studies is 70 minutes.

Is the GED computer based?

Yes, the GED is delivered on a computer at a test center or an approved online location, depending on your area.

What does College Ready mean on the GED?

A score of 165 to 174 is College Ready, and 175 to 200 may earn college credit under a school's own policy.

How should I prep for the GED?

Study one subject at a time to a clear buffer above 145, using timed practice and the official GED Ready practice test to confirm readiness before you book.