The most important factor of Florence Nightingale's theory of nursing education is that it should be practical and thorough. She felt that nurse training was almost as important as training of doctors, and nurses should have medical knowledge too.
Nightingale wanted to make nursing a respectable profession and believed that nurses should be trained in science. (enotes)
Nurses in training at Nightingale’s school would tend to actual sick patients at a nearby hospital. She was also very involved in nurse training and sanitation for the army.
In her role as Superintendent of Nurses and caring for patients in military field hospitals, Nightingale was struck by the appalling conditions and the number of deaths related to infection. (phoenix.edu)
Although it might seem logical to expect sanitation even in field hospitals, Nightingale was a tireless supporter of regulations for sanitation conditions.
It is important to note that many of her basic methods are still in use today!