A GED certificate shows you have high school-level knowledge without attending a traditional high school

A GED certificate is a document issued by your state that proves you have mastered the academic skills taught in a standard high school curriculum. You earn it by passing the GED exam, a standardized test that covers English language arts, mathematics, science, and social studies. Employers, colleges, and trade schools treat a GED certificate the same way they treat a traditional high school diploma for most purposes.

The GED exam is administered by a nonprofit organization called GED Testing Service. You take the test at an official testing center in your state, and the exam is offered year-round on scheduled dates. The test is computer-based and takes about seven and a half hours to complete across multiple sessions.

Key Takeaways

  • A GED certificate demonstrates high school-level academic knowledge and is recognized by employers and colleges across the United States.
  • You must pass four separate subject tests—English language arts, mathematics, science, and social studies—to earn your certificate.
  • Each state sets its own passing score, so the score you need varies depending on where you take the test.
  • You can prepare for the GED exam through free or low-cost classes offered by community colleges, libraries, and adult education programs in your area.
  • The GED certificate does not replace a high school diploma, but it serves the same purpose for employment and college admissions in most situations.

Who can take the GED exam

You are generally allowed to take the GED exam if you are not currently enrolled in high school and have not already earned a high school diploma. Age requirements vary by state—most states require you to be at least 16 or 17 years old, though some allow younger test-takers with parental permission or a school official's approval. You should check your state's specific rules before registering.

There is no minimum education level required to sit for the exam. You do not need to have completed any particular grade or attended school for a certain number of years. The test itself determines whether you have the knowledge, regardless of your educational background.

What the four subject tests cover

The GED exam is divided into four separate tests that you can take on different dates if you choose. The English language arts test measures your ability to read, write, and understand written material. You will answer questions about passages, write a short essay, and demonstrate grammar and language skills.

The mathematics test covers algebra, geometry, and basic statistics. You will solve problems involving equations, shapes, data interpretation, and real-world scenarios. A calculator is allowed for most of the math test, though one section requires you to work without one.

The science test asks questions about life science, physical science, and earth and space science. You will read passages and diagrams, interpret data, and answer questions that test your understanding of scientific concepts and reasoning.

The social studies test covers civics and government, U.S. history, economics, and world history. You will read documents, maps, and charts, then answer questions that show you understand historical events, political systems, and economic principles.

How passing scores work by state

Each state sets its own minimum passing score for the GED exam. This means the score you need to pass in one state may be different from the score you need in another state. Scores typically range from 100 to 200 per subject, and most states require a score of around 145 to 150 per subject to pass, though this varies.

When you register for the exam, you will see your state's specific passing score. If you do not pass one or more subjects on your first attempt, you can retake just those subjects without retaking the entire exam. Many people pass some subjects on the first try and retake others later.

Preparation options and study resources

Many community colleges offer free or low-cost GED preparation classes, both in-person and online. Your local public library often has free study materials and may offer classes as well. Adult education programs run by your school district or city government frequently provide preparation courses at no charge or for a small fee.

Online platforms offer self-paced study options if you prefer to work on your own schedule. Some are free, while others charge a fee. Khan Academy and the official GED Testing Service website both offer free practice materials and sample questions. Working through practice tests is one of the most effective ways to prepare, since the actual exam questions follow similar patterns and difficulty levels.

The difference between a GED certificate and a high school diploma

A GED certificate and a high school diploma are not identical documents, but they serve the same purpose in most situations. A diploma shows you attended and completed a four-year high school program. A GED certificate shows you passed a standardized test that measures the same knowledge. Most employers and colleges accept both equally.

There are rare exceptions. Some military branches, certain apprenticeships, or specific college programs may prefer or require a traditional diploma. When this matters, it is usually stated clearly in the job posting or program requirements. For the vast majority of jobs and college programs, the two are treated the same way.

How to register and take the exam

You register for the GED exam through the official GED Testing Service website or by contacting your state's GED program office. You will choose which subject test to take first, select a testing center near you, and pick a date that works for your schedule. Testing centers are located in community colleges, adult education centers, libraries, and other public facilities across your state.

On test day, bring a valid government-issued photo ID and arrive early. You will take the exam on a computer at the testing center. Each subject test takes between 1.5 and 2.5 hours, and you can spread your four tests across multiple days if you prefer. Your scores are usually available within a few days of taking the test.

Frequently Asked Questions

Can I take the GED exam if I already have a high school diploma?

No. The GED exam is designed for people who did not complete a traditional high school program. If you already hold a high school diploma, you do not need a GED certificate.

How much does it cost to take the GED exam?

The cost varies by state, but typically ranges from $30 to $150 total for all four subject tests. Some states charge per subject, while others charge one flat fee. Check your state's GED program website for exact pricing and any fee waivers that may be available.

What happens if I fail one or more subjects?

You can retake any subject you did not pass without retaking the others. There is usually a waiting period between attempts—often 30 days—and you will pay the testing fee again for each retake. Most people pass all four subjects within a few attempts.

Is a GED certificate recognized outside the United States?

Recognition varies by country and institution. Some countries and employers recognize a GED certificate as equivalent to a high school diploma, while others do not. If you plan to work or study abroad, check with the specific employer or school about their requirements.

Can I get a physical copy of my GED certificate after I pass?

Yes. After you pass all four subjects, your state will issue an official GED certificate. You can usually request additional copies or a digital version through your state's GED program office for a small fee.