I am not very sure if this is so true. If this story is correct, then it does not matter what you teach, your passion, your ideas, your ideology and the students will simply keep on going with what they have learnt in terms of politics and society by the time they are 15 years of age? I quote:
An article of faith among conservative critics of American universities has been that liberal professors politically indoctrinate their students. This conviction not only fuelled the culture wars but has also led state lawmakers to consider requiring colleges to submit reports to the government detailing their progress in ensuring “intellectual diversity,” prompted universities to establish faculty positions devoted to conservatism and spurred the creation of a network of volunteer watchdogs to monitor “political correctness” on campuses.
But a handful of new studies have found such worries to be overwrought. Three sets of researchers recently concluded that professors have virtually no impact on the political views and ideology of their students.
See one of the papers here. Hmmm, not sure at all, after all, the influence of teachers stops at eternity...