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Using the Internet, it's vastly easier than ever to acquaint yourself with the academic interests and leanings of your school's faculty, and gravitate toward those who provide the most congenial fit.
Don't overlook adjunct faculty, many of whom have "real jobs" off campus, although they might only be able to offer barely-paid or unpaid internships^[**].

Note †: Success might require you to develop your social skills to include a sociably gregarious & genuinely charming personna.  I suspect that I'm not the only CathInfo reader who's perceiving the anonymous writer to be a loner most comfy inhabiting a Catholic chapel enclosed by a bunker.  Perhaps adopting the personna of the stereotypical confused freshman would be an unchallenging but effective first step.

Note ×: Except that the "nest of vipers" quoted farther above might also be a fitting metaphor for the departmental environment in which you train for teach[ing] in a secondary school".   I'm imagining a modernist "Catholic" university at which its education faculty, including its dept. office, is disproportionately populated by feminist "nuns on the bus".  Without divine intervention, prospects might be quite grim for extracting practical info by socializing with them.

OP here. Thanks for the lengthy responses. It's true that I could be described as a loner, though I'm working on being more social. I have a melancholic personality. Though with the world today being as awful as it is, I wouldn't mind inhabiting that kind of bunker! I'll take your advice, Dicax. 
I've learned very quickly that my education professor (who also is the dept. chair) is a liberal Jew. So your last bit of advice may very well apply in this case. 

If I were your parent, I wouldn't like the fact that you plan to drop out of college and get and minimum wage job.  That's not going to pay for an apartment, food and transportation.  You'd eventually have to move home.  Is that any better than the environment on a college campus?  Is there ANYWHERE today that you can go (outside of a monastery) that is protected from the immorality today?  I don't think so.
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Can you not continue to go to college and do so with the attitude of "living like a monk"?  For example, spend most of your time in class or at the library, or walking outside, or somewhere away from technology or whatever is your worst temptation?  I certainly think this is possible.  Going to class, even if your professors are raging Marxists, is not a proximate occasion of sin.  I don't see why you can't go to college...especially since you recognize the evil influences.  Most of the time, this is half the battle.  College is more dangerous for those who don't realize it's dangerous.
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You have to think long-term here.  If you don't go to college, what are you going to do for work?  Are you interested in learning a trade (plumber, electrician, carpentry, masonry, etc)?  Are you going into factory work?  Are you going to get certified as an IT tech of some type?  Are you going to join a monastery or become a religious?  If you want to get married someday, you need skills.  You have to have a long-term plan for work.
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The world is evil everywhere - inside and outside of college.  Inside and outside of business environments.  We are called to live in the world, so Our Lord will make it possible.  You can't run away from the world; outside of a monastery, that's not possible.