Most American Fundamentalists are not very well educated people. Most of them have only a secondary school education, if that. They rely almost entirely on their Preacher for information about religious beliefs and interpretation of the Bible.
For many American Fundamentalists, when they disagree with their Preacher, they simply find a church with a Preacher they agree with.
As for their so-called semenaries, most of them are not accredited by any academic institution of higher learning as are secular colleges and universities. Most of them are “Bible Schools” where much of the learning is by rote.
Advanced learning is not encouraged by many Fundamentalist preachers because they have found that when their members do get a higher education, they leave Fundamentalism behind them and either drop religion altogether or become members of one of the mainstream Christian religions, including (oh! the Horror)

Roman Catholicism.