How long do you have to go to school to get you minor degree?

There is no such thing as a minor degree. Typically, four year colleges and universities offer minors in many areas. However, a minor is not a degree nor does it meet the requirements of a degree. Students declare a major program of study (typically four years), and can choose to take with that major, a minor program of study. Still, the degree whether with or without a minor requires - in most cases - your years of study.