General Educational Development (or GED) tests are a group of five subject tests which, when passed, certify that the taker has American or Canadian high school-level academic skills. The GED is sometimes referred to as a General Equivalency Diploma or General Education Diploma.
To pass the GED Tests and earn a GED credential, test takers must score higher than 60 percent of graduating high school seniors nationwide. Some jurisdictions require that students pass additional tests such as an English proficiency exam or civics test.
Grantville brought the idea of the General Educational Development tests and credential to 17th century Germany. The test was available to both up-timers and down-timers, and having a GED even acquired a certain amount of status, since it identified a person as having the equivalent of an up-time high school education.