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you need at least four years of college to become a elementary teacher   and if you want to become a junior high teacher or a high school teacher   you need eight â¦ years of college or a higher degree in education.
For example, to be a doctor, you need a degree from a undergraduate program (BA or BS) which is usually 4 years, but can be 5 if you take 5 years to obtain 120 credits. Then you need another 4 years of Medical School.   To be a teacher -- 4 years undergraduate and then to increase your chances of being hired, another two years for a Masters Degree.