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Firstly, I want to commend your aspirations to become a doctor. Although it's a long road, it is 1000% worth the effort and commitment to fulfill your calling.
I can answer your question more broadly. In the United States, one has to earn an undergraduate degree prior to entering medical school (which is 4 years of graduate medical education). I am currently in medical school and my class is full of students who came from a variety of backgrounds. My advice to you is to choose a college that will allow you to excel but also challenge you to grow intellectually. (This same advice applies to selecting a major of study.) That may or may not be a college that's on a fancy ranking list, but I can attest to the fact that some of my classmates started off in community college education, excelled, and then transferred to a 4-year university for the remainder of their college education. Some of us completed 4 years directly at a research/academic institution and then there are a few who joined the army and the completed school. There are some that also do an internship or a year abroad volunteering after they graduate college but before applying to medical school. I was an engineering major and didn't find my calling until 2 years into the workforce and then I had to do a post-bacc to fulfill requirements to apply to medical school. There are a variety of paths, but regardless of what you choose think it's important to seek challenges and face them head-on so you can grow. That will allow you to cultivate the skills necessary to excel in medical school and in residency.
It's also important to find an institution that offers mentors (usually professors) that will help you and also be in an environment of colleagues that are equally intellectually motivated. It's all about what type of student and personality you are and finding what fits for you. Some students excel in smaller class sizes and if that's the case then a large state-school might not be a good idea but rather choose a smaller school. Some students can maintain laser-focus and don't need individual attention and if that's the case then college size isn't a factor.
I also want to offer a point of consideration regarding finances. If that is something that is a factor for you then it's definitely okay to choose a school that offers you scholarship opportunities. (A student who does well will be able to to do regardless of where they attend.) The process of applying to medical itself is very pricey (several thousand alone including MCAT test fees, application fees, secondary application fees, interview/transportation/lodging fees). I would first come up with a list of schools that offer the above and then figure out what is the most economical and what you can afford. Many do not break the bank to get to med school. Many earn scholarships the entire way through. No matter what you ultimately I
decide, it is absolutely imperative for you to do well and excel in whatever courses you take.
I wish you the best of luck in your journey and your success.