Andrew Johnson had the least formal education-- none at all. He never was a student in a school of any kind.
No, Jane Austen never went to college. In fact she had less than two years of formal education.
Abraham Lincoln did not have a good education. It was said that he had less than one year of formal education. Lincoln taught himself to read.
Smoking is statistically associated with education in that the more formal education a person has, the less likely he or she is to be a smoker. Since professionals generally have more education than others, they are less likely than many other groups to be smokers.
No less than 14 years.
Few opportunities with poor education. Average years in school is less than 3 years in developing countries.
Two terms of four years, or ten years (if he succeeds to the presidency of another president with two years or less on his term).
Thomas Edison had little formal education; he attended school for less than three months. He was primarily self-taught and attributed his success to his own curiosity and resourcefulness.
Abraham Lincoln had very little school. He had less than one year of formal education. He basically taught himself to read.
They can be elected President two more terms.
If you are asking about formal training, at least a PhD. So that means 4 years of college, and then 2 or more for a masters and 3-5 more for a PhD. Some people complete college in 3 years, and a few go directly to PhD programs. So it may be less.
Andrew Johnson (the 17th President) served less than four years as President because Abraham Lincoln (the 16th President) was assassinated.