* Bachelor's Degree: Typically requires 4 years of study after high school (12 years of prior schooling).
* Associate's Degree: Typically requires 2 years of study after high school.
* Master's Degree: Typically requires 1-2 years of study after a bachelor's degree.
* Doctoral Degree (PhD): Typically requires 4-7 years of study after a bachelor's degree. This can sometimes be longer, especially in fields like medicine.
* Professional Degrees (e.g., MD, JD, DDS): These vary greatly in length, often requiring several years beyond a bachelor's degree (e.g., medical school is typically 4 years after completing undergraduate study).
Therefore, there's no single answer. The total number of years depends on the specific degree pursued.