The General Educational Development (GED) Diploma is a high school equivalency certificate awarded upon successful completion of a test. The GED measures academic skills in five areas: writing, social studies, science, interpreting literature and the arts, and mathematics.

The Center for Adult Learning & Education Credentials , a division of the American Council on Education, has overseen the GED since 1942. According to the Center, about 95 percent of American colleges, universities and employers consider a GED diploma equivalent to a high school diploma. The average age of GED test takers is just over 24.

There are GED testing centers around the world. You can find a test center in the US or Canada by browsing their regional sites, or call the 24-hour toll-free GED hotline at (800) 626-9433. The GED test is offered internationally through Sylvan Technology Centers, and a list of international test centers is available in pdf format. The GED is available in Spanish and French . Accommodations for individuals with disabilities can be made.

There are several ways to prepare for a GED test. You should select the option that works best for you by considering your learning style and lifestyle:

I like to learn by myself, in my own time, at my own pace.
Try a GED preparation book. Most books offer practice tests and test-taking tips. You can choose from comprehensive books, which focus on the five GED skill areas, or specialized books, which focus on one area

I like to see and hear things explained to me. I prefer to study at home.
Watch GED preparation classes on television or video and practice the exercises in workbooks. GED TV’s 43 half-hour lessons appear on public broadcasting stations and education channels.

I like to learn with other adults and the help of a teacher.
Take a GED preparation class. To find a GED preparation class in the US, browse GED Contacts by State . Classes may use the GED preparation books and/or the GED TV series described above.