I have checked in several resources and have gotten several different answers to this question. I am considering being an anesthesiologist and I was wondering how long an anesthesiologist goes to school. 

The answerﾠdepends on when you start counting the years! To become an anesthesiologist you must first go to medical school to become a medical doctor. In the United States, medical school is generally a four year course of study. To get your medical license, though,ﾠyou must first complete an internship - this takes another year. After internship, you must gain admission to a training program in anesthesiology. This is known as "residency"ﾠ - derived from the fact that doctors in this stage of training spend long hours in the hospital which almost becomes their place of residence!ﾠ (In fact, in the old days these doctors in training did live on the hospital premises.) ﾠ 

An anesthesiology residency program in the United States is three years - it is four years in Canada. At the end of this you are a "Board-Eligible" anesthesiologist - you must still pass two sets of exams - one oral and one written - before you areﾠ "Board-Certified" in the specialty of anesthesiology. Many anesthesiologists undertake further training in a sub-specialty. This is called "Fellowship." Anesthesiology sub-specialties include pain medicine, intensive care, and cardiothoracic anesthesia. 

Of course, to get into medical school in the first place you must finish high school and then get an undergraduate degree, usually, but not always, with a science focus. And get pretty good grades! Good luck with your decision and with school!