how about uk grad school?? i pretty interest in Oxford math and computational finance
does it competitive as US grad school admission???
You are missing the point. US Grad schools do not care what US school you come from.
You seem to feel that you belong in a higher tier school. You are probably having regrets about high school and your college applications. My advice to you is to stop worrying about it, and do well at RPI. If you want to prove yourself, do well there first. There are tons of smart people in RPI, and I am sure there is a place for you. Once you prove yourself there, then you can apply for top tier grad schools.
I also did horrible in high school. I was lazy, and I have a lot of regrets. I only got accepted to three very mediocre state schools. In the end, I just chose one of them and hoped for the best. In my first year of undergrad, I applied for transfers again because I was having the same feelings that you did. Then I realized that the problem wasn't the school--it was me. I decided to kick-ass in my mediocre school, and in senior year, after I had squeezed all possible benefit from my mediocre school, I finally grew out of it, and applied to the top tier MFE programs, and I am studying at one right now.
When I interviewed with the bank that I am interning at now, I mentioned that unlike many of the people in my MFE program, I came from a mediocre school, and wasn't a "genius" my whole life. But, I felt that I was stronger because of it. When you are a "genius" your whole life, you don't know how to communicate as well, or relate to people as well. You learn a lot more when you get to see things from the bottom up, and/or from other people's point of view. I started an organization where I tutored financial math in my undergrad, and I feel like the experience was much more worth it than anything I could have done at one of those fancy elite academies. By going to one of those, you risk thinking you are all that, and tunneling your vision/thinking.
If I had to give my younger self some advice (and you are close enough), I would say to stop being so obsessed with the prestige and reputation you think a transfer will bring you, and kick-ass where you are. Only when you stop focusing on that will you do well in school and in career.