You can take AP exams even if you do not have access to AP classes. Just need to find a local high school that offers them, and take them. Top AP scores will help you get into many colleges including MIT. Community colleges vary all over the place in difficulty but many community college classes are way easier than high school AP classes. So taking the AP exam, you also gauge your mastery and may get credit at a number of schools, including MIT, if you can score a 4 or 5 on the exams. There are many students from California that take 12 to 16 AP exams and get all fives. Not all of those students get into MIT. MIT is a holistic admissions process, so many factors such as talent in any area, advanced math skills, as demonstrated by admission and participation in summer programs such as Hampshire Math, and other factors such as race, go into most admissions decisions today at MIT and most private selective colleges.