According to the University of Pennsylvania, becoming an oral surgeon takes up to four years of undergraduate schooling and six to eight years of graduate schooling. This means 10 to 12 years of post-high school education overall.
Generally, the four years of undergraduate schooling involve earning a bachelor's degree in biology, chemistry, anatomy or another physical science. The six to eight years of graduate schooling include a six-month rotation, a two-year residency and the four-part United States Medical Licensing Examination. If the student completes his residency during medical school, then his post-graduate education lasts six years. If the student completes his residency after completing his medical school requirements, then his post-graduate education is extended to eight years.