Brett S. answered 05/13/19
Aspiring History Teacher Looking to Help a Student Succeed
I think it is fair to say that after a student has taken a U.S. Government course they can be considered politically unbiased. However, this is very subject to fluidity. There are some students who research politics well before they take a US Gov class. There are others yet who should be well educated who still blindly believe what their parents or the media tells them. To give you a numerical answer, I would say freshman in high school, so 14-15.