Can you get into teachers college with a 3 year degree?

In most places, no, you cannot get into a teacher's college with only a 3-year degree. Teacher training programs typically require a 4-year bachelor's degree as a minimum requirement. Some programs might accept 3-year degrees *plus* additional coursework to make up the equivalent of a bachelor's, but this is not the norm and would need to be checked with individual teacher colleges. It's much more common and straightforward to have a full 4-year bachelor's degree before applying.