The GED is a certification that says that the person has high school level skills. The GED test itself contains questions about mathematics, English, science and Social Studies. Once you pass, you get GED online diploma. A GED required by many employers and colleges. If you donít have the GED, you will find it difficult to get a job. If you want to further your education, you will need to get your GED. One of the biggest advantages to get GED online is that you aren't limited to opportunities in the area where you live.programs are perfect for people who work during the day, and those who aren't comfortable in a traditional school environment.