Albert Einstein was expelled from high school at 16 years old for his poor attitude and the negative effect he had on peers. Einstein traveled before he completed his high school education and enrolled in the Swiss Federal Institute of Technology, where he graduated with a teaching degree in 1900.
In 1902 Einstein married Mileva Maric, and they had two sons. By the age of 26, Einstein completed his doctoral degree. While Einstein was not immediately celebrated, his fame grew, and he eventually became known as one of the greatest scientific minds that lived. His theory of relativity transformed the scientific world.