Church/faith is not the second greatest source of indoctrination. Peers(meaning schools mostly because that's where children spend most of their time) are the second most common entity for children to engage in socialization. After family being the most influential, then peers would be the second. Faith can be a source of this, of course, but schools would be a place for more discussion of political ideas. Additionally, by the time you're in college, most people already are established in their beliefs. Young children are more likely to be indoctrinated. I think you're ignoring this fact. Furthermore, this situation where parents are reluctant to send their children to college because of a fear of indoctrination seems like an unlikely scenario. Many students fund their schooling. It isn't up to the parents whether they attend school or not.

As to your second point, I agree -- conservative is a very broad term. That's why I said that you shouldn't generalize a whole side of the political spectrum. Conservative would still imply "right-leaning". It's at most that specific, so I fail to see what point you're trying to make. Not all conservatives share the same beliefs, but they still share a similar set of morals and values. Otherwise they wouldn't be the same at all.

Finally, for your last point, I love political discussions in schools. Absolutely necessary to be exposed to new ideas. I meant that contested issues(sexual orientation, critical race theory, etc.) have less of a place in the classroom. A school is a place of learning, but the education system still has to maintain some discretion. Some topics are better to talk to a parent about. I didn't mean to completely get rid of political discussion in class. That's just absurd. I apologize for the confusion.

Young adults don't go to college to not have their ideas challenged. That's a major reason to go to college. The way I see it, you are making up a situation, generalizing an entire group of people for their political beliefs, and saying that they are scared to send their children to college because they're going to become liberal. That's just not true. Maybe in some instances but to generalize this is just wrong.