Education: breeding of conservatism

[katym]

Recently had a discussion with a conservative foe, who wrote:
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you cannot argue issues from a liberal position. You have to argue issues with facts, and then see where it leads, and facts always lead to conservative positions.

The fact is that an education leads to conservative thought, but an indoctrination leads to liberal thinking.

That's just the way it is. You're wrong because you were indoctrinated; it's not your fault.
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Wondering - as being a college student, I'm often accused of being the atypical liberal brainwashed student. If most in higher education are apparently liberals, then his point is baseless.

Does anyone know of statistics on this? Higher education and percentages of left vs right?