Well education is not really about telling children an opinion or viewpoint. I, frankly, have never taken a government class where we discussed "why it was Osama Bin Laden vs [Insert other theory here]". In fact I have yet to have a Sept 11th discussion at all, period. So, I agree. It is no more the right of a political science professor to share why he thinks 9/11 was "an inside job" than for a religion professor to share why he/she believes in God. In fact my best Professors have all refused to answer questions regarding political affliations, religious views and opinions. It is not only tainting the education but also it gives the students an easy A since they can simply take the professors side and not worry about proving their own.