<p>For clarification, when I said MIT was disproportionately atheist/agnostic, I meant, well, disproportionately atheist/agnostic, not majority, as many have said. According to those undergrad surveys, MIT undergrad is somewhere 40-50% atheist agnostic, compared to 5%-15% with the American population. If you count the grad school, the number only gets bigger. You're not going to get ostracized or laughed at because you have religion here, but be prepared for general irreverence. </p>
<p>As far as affecting your admission goes, the #1 thing MIT looks for is the fit, and if you go around teaching people the earth is 6,000 years old and dinosaurs lived with people, etc., I can promise you that you don't fit with MIT. You may want to look at other schools such as Liberty University. Denying you admission based on your beliefs is wrong, but denying admission based on the fact that if bad science is so important to you, you'll be miserable here, or you'll make others miserable. </p>
<p>Again, all of this is conjecture, and I'm in no way representative of the admissions committee, but I would be very disappointed if the adcom admitted someone whose main interests included spreading knowledge of young earth creationism. I mean, if you believe that, I don't really care, but if you dedicated all your free time in high school to "teaching" children that stuff, I have a reasonable expectation that you will be unhappy here and will make others unhappy.</p>
<p>EDIT/ADDENDUM: And I should mention that having ANY religion at all is not a hindrance towards MIT admissions. Plenty of people in the scientific community are very religious. They just also accept science, which the OP seems to do quite well.</p>