"In order to teach a theory is in error, you must have substantiating evidence. That evidence will contradict the current understanding of the subject in question. Therefore, the student in ill prepared."
So you think the best way to prepare a student for science is to prevent the student from even seeing conflicting data? And you would call such a thing science?
So far, there hasn't been any 'conflicting' data. There is no controversy in the scientific community.