Becoming a Doctor of Chiropractic is every bit as rigorous as becoming an MD. A Doctor of Chiropractic, or DC for short, must complete four years of undergraduate pre-med. They study anatomy, physiology, chemistry, biology, physics, and psychology. Once accepted into an accredited College of Chiropractic, they must undergo another four to five years of rigorous study, including at least one year doing actual patient care in a clinical program.
Once a student has received their degree in chiropractic, and met all the requirements, they still have to undergo–and pass—extensive National Board exams. Once those are successfully completed, they then apply to the state for a license. Only when that license has been granted can they practice as a chiropractor in that state.