What is a high school equivalency certificate? A High School Equivalency Certificate or GED are designed for adults that have not finished high school, but need a credential to enroll into college or get a new job. The High School Equivalency certificate or likewise, GED certificate, measure core competencies in the areas of: English, reading/writing, Math, Science, Social Studies and require the completion of a writing project. Once students complete the online exams with a passing score, they are issued a high school graduation equivalency certificate. Excel High School offers open enrollment for our online high school diploma programs, so students can start at any time. Getting a GED or high school equivalency certificate online is a great option for busy working adults to complete what they once fished. Our Online High School Equivalency program and Online GED prep can be completed in just 2-6 weeks; but students have a year to complete.