Without a high school diploma, it can be more difficult to advance in a professional field. A viable option for those in need of a diploma is the GED. Commonly defined as Generalized Educational Development or General Equivalency Diploma, it is an alternative degree for individuals who did not complete high school. There are many ways to train for the test, and one of the most convenient routes is to take the GED online. Computer classes are useful for independently-minded people who trust their own ability to prepare for the test. They are offered in module formats that require students to work through each section from beginning to end in order to move forward. Many facilities offer practice tests and sample questions to further prepare students with test-taking skills. Besides the degree received after passing the test, many courses also prepare students to continue their educations with valuable skills for college and professional life.