I’m guessing you are a UWC student, correct? I’m very familiar with the schools. Anyway congrats on your hard work and success so far!
I’ll advise that the schools on your list are extremely competitive. I can’t speak to acceptance rates for international students specifically, but published RD rates for these schools are for the most part in the single digits, as low as 5%, probably lower for Chicago, which some are speculating only accepted 2% of RD applicants this year. The actual rates are lower because these include “hooked” applicants, like athletes who’ve made arrangements through school athletic departments and are guaranteed admission, or nearly so.
Generally it is viewed and advised that NO ONE can be confident of acceptance at these schools, even if they have perfect ACT or SAT scores and the highest grades possible. Of course, people will be accepted but many will be denied admission with the strongest possible record.
Here’s an example: about 6-7 years ago we visited the most highly ranked liberal arts college (not on your list). At info session, the rep said 70% of applicants were fully qualified to attend the school and succeed academically and otherwise. At the time, it accepted 14% of applicants (much lower now). So 1 in 5 fully qualified students were accepted. Now imagine if that acceptance rate is 5% (but actually lower).
If you look at the SAT 25-75% range for Harvard, it is 1410-1600. So at least 25% of students have perfect scores and only 25%, including athletes and legacies, have 1410 or lower. It is similar for all the other schools. It’s not personal. It’s just a matter of very many students applying for too few seats.
Of course you can apply to all these schools, and maybe you would be accepted. I would never say otherwise, especially if you are a UWC student and are studying in a second language and/or have other circumstances that make you an especially attractive candidate. I would suggest, though, that you broaden your search to include schools with higher acceptance rates. If you are committed to studying in the US (and maybe your are not) then you would want a couple of schools with acceptance rates over 50% and are affordable.
The good news is that there are more than 2000 full-fledged colleges/universities in the US. Many, many have beautiful campuses, offer a full array of academic disciplines, and have lots of amazing people–students, faculty, and staff. Very few are as competitive as the ones on your list, but you can get an education similar to, if not equal to them.
It’s hard to make specific recommendations without knowing your interests and how much financial aid you might be looking for. Would you prefer an urban school or a smaller college town? Would you prefer a smaller school (under 5000 students)? Is a large one (over 15,000) okay? Is weather an issue? It is very cold and snowy at the northeastern schools. Is that okay? Are you interested in a science/engineering (STEM-science, technology, engineering, math) school or more of a liberal arts program?
If you are a UWC student, here’s a list of Davis Scholars schools in the US, which have a close relationship with the UWC community. I would explore schools these and speak to your college advisor about the program, which can include financial aid.
http://www.davisuwcscholars.org/partners
Take #26 Denison University for example. It is a small liberal arts college (LAC) in a small college town. It has a beautiful campus and excellent academic programs. I’ve seen several people here on CC recently mention being impressed on their visit to the school. It accepts over 30% of applicants (I believe) and gives generous financial aid.
33 Grinnell is an excellent small LAC out in the cornfields of Iowa. #32 Gettysburg is in a quaint Pennsylvania town where the largest battle of the American Civil War was fought. It has lots of historic battlefields that attract lots of tourists. It's great for history. #43 Macalester College is right in the Minneapolis-St.Paul metro area, so much more of an urban school, also with excellent academics. (It is cold there.) Lake Forest is in Chicago, which is a great city. Brandeis, Trinity, Richmond, Connecticut College, and many others on the list would be worth researching. WPI and Case Western are excellent STEM schools, though also competitive.
Unfortunately, there is a sort of mania for the Top 20 schools. There is an advantage to prestige. But really many other schools offer just as fine of an education and are much more accessible in terms of admission. Good luck!