GED Science Preparation Course 2026

This course is for adults in the United States who are getting ready for the GED® Science test. It covers the test format, the science practices (experiments, data and evidence), life science, physical science, and Earth and space science, using short scenarios and data tables like those on the test. Study each lesson, try its topic quiz, then take the timed 40-question final assessment. Score 80% or more to get a certificate of completion.

Course
United States
100 questions
Checked October 13, 2026
Fact-checked October 13, 2026

Quick answer

This free course has about 360 minutes of lessons, 6 untimed topic quizzes (100 questions in all) and a timed final assessment of 40 questions drawn at random. Score 80% or more on the final assessment to download a certificate of completion (private, not accredited). Checked against official sources on October 13, 2026.

Start with the lessonsGED Science Preparation Course Lessons: about 360 minutes of reading. Every test question is covered in the lessons.

What you will learn

Describe the format, timing, calculator rules and scoring of the GED Science test
Identify hypotheses, variables and controls, and judge how well an experiment is designed
Read tables and graphs, make predictions, and calculate the mean, median, range and probability
Explain body systems, homeostasis, nutrition, disease, cells and heredity, including Punnett squares
Trace energy through ecosystems and explain natural selection
Calculate speed, acceleration, momentum, force, work, power and density, and balance simple equations
Explain Earth's cycles, plate tectonics, natural hazards, climate, and the Sun, Moon and stars

Score 80% or more to download your certificate.

Your study plan

Read each lesson, take its topic quiz (untimed, with explanations), then the timed final assessment. A new mix of questions is drawn every time. Your progress is saved in this browser.

Topic quiz 1: The GED Science test and how to approach it

What to know before the test

The GED Science test is 90 minutes long, in one section with no breaks.
A calculator is allowed on the Science test, and a calculator reference sheet is provided.
You do not need to memorize formulas; the information you need to answer each question is provided.
The Science test is scored from 100 to 200, and 145 or higher is a passing score.
You need 145 or higher on all four GED subjects to earn your high school equivalency. A score of 165–174 is College Ready; 175–200 is College Ready + Credit, which may qualify you for up to 10 college credit hours.
About 40% of the test is life science, 40% physical science and 20% Earth and space science.
All content connects to two focusing themes: Human Health and Living Systems, and Energy and Related Systems.
About half of the questions are in scenarios, where two or three questions share one text, graph, table or diagram.

Frequently asked questions

Is this the official GED Science test?

No. This is an independent practice course. It is not run by GED Testing Service, and your scores here are not GED scores.

What does the certificate from this course show?

The certificate of completion shows that you finished this practice course and scored at least 80% on its final assessment. It is not a GED credential, not a high school equivalency and not an official score, so schools and employers will not accept it in place of the GED.

How long is the GED Science test?

It is 90 minutes long, in one section with no breaks.

What score do I need to pass GED Science?

You need 145 or higher on a scale of 100 to 200. To earn your high school equivalency, you need 145 or higher on all four GED subjects.

Do I need to memorize science formulas?

No. The official Science page says you do not need to memorize formulas; the information you need is provided. A calculator is allowed, and a calculator reference sheet is provided.

How do I sign up for the GED test?

Create a free account on ged.com, then log in to schedule your test. You can take the four subjects together or one at a time. If you need an accommodation, request it before you schedule.

Is the certificate accredited or officially recognised?

No. It is a private certificate of completion for knowledge only. It is not recognised, accredited or approved by any government, licensing body, regulator or educational institution, and it does not replace any licence, certification or training required by law.