high school completion, GED or equivalent
GED education level
general equivalency diploma completion
https://en.wikipedia.org/wiki/General_Educational_Development
An education level that indicates that the highest level of education achievement for a person is the pass of a General Education Development (GED) tests. The GED tests are a group of four subject tests which, when passed, provide certification that the test taker has United States or Canadian high school-level academic skills.