* Bachelor's Degree: Typically requires a high school diploma or its equivalent (GED, A-Levels, International Baccalaureate, etc.). Some programs may require specific high school courses.
* Master's Degree: Requires a completed bachelor's degree. Specific undergraduate majors might be required or recommended, and a minimum GPA is usually necessary.
* Doctoral Degree (PhD, EdD, etc.): Requires a completed master's degree. Again, specific undergraduate and master's degrees may be required, along with strong academic performance and often, letters of recommendation and standardized test scores (like the GRE).
* Associate's Degree: Usually requires a high school diploma or equivalent, though some programs may accept students with a less formal educational background.
In short, the prerequisite education for a degree is always the completion of the preceding level of education. Beyond that, specific requirements (GPA, prerequisite courses, standardized test scores) vary significantly depending on the institution and program. You should always check the specific admission requirements for the program you're interested in.