I think Grinnell College may be perfect for you. It sounds like it’ll be a bit far from you, but I encourage you to take that leap. I’m from rural NY and it’s my perfect fit, so I don’t mind traveling the distance. The fist thing I noticed when I walked on to the campus was the people. Grinnell is as far from prep as you can get and I loved how humble and quirky everyone was on campus. Here, you can be yourself. I’d say the student body is split 60/40 introverted/extroverted, so you’ll easily find your home here. I’m surprised you liked Williams if you didn’t want prep as I have a friend who goes there who says that the sports act as the social stratifier there and if you’re not in them it’s like not being in greek life on other campuses.
This brings me to greek life at Grinnell, it’s nonexistence. greek life isn’t a thing on our campus because we value inclusion. In fact, we value inclusion so much that we are student governed. This means that we make the rules we live by. During orientation week, my roommate and I held nightly teas where we would invite all the new people we enjoyed meeting that day to tea in our floor’s lounge so that we could get to know each other in a quieter environment. This community can be extended to the rest of Grinnell. There are groups that get together to play board games to unwind. Getting to know professors is just as easy as getting to know fellow students. All professors have accessible office hours and many of them bake food to bring or bring their dogs. It’s very casual and this allows students to foster close relationships with them. This means that while students are getting world class education, they are still treated as people.
At Grinnell you will be challenged to push yourself, but it won’t be academically competitive. I have yet to hear another student compare their grade to another persons (a process I abhorred in high school) and we regularly support other’s goals.
The art community thrives at Grinnell. In fact, there’s an Andy Warhol exhibit happening in our gallery as soon as the fall semester starts! My roommate is a Physics major and she regularly takes drawing classes. Also, your friends who aren’t into art will come support you at gallery openings and displays of your work because here we support others’ interests. I personally work in the dark room regularly with a group of other students and it has become my time to unwind and chill.
Speaking to your major interests, Grinnell has state of the art science facilities that are really much better than most other LACs. Our science facility is named for Noyce as in the founder of Intel or the “mayor of silicon valley”. We take great pride in our science professors too. Grinnell College Professor Shonda Kuiper recently received a $300,000 grant from the National Science Foundation’s Improving Undergraduate STEM Education program. This means that Grinnell is constantly improving their science offerings. Finally, Grinnell has a “women in science” program my roommate participated in that’s really helpful to get to know fellow classmates without the pressure of larger group situations. My roommate particularly enjoyed this because, like you, she is introverted. I am personally an Economics major here, so I can’t speak to much more about science at Grinnell, but I’d be willing to get you into contact with someone who is if you’re interested.
Also, speaking to your need for aid, Grinnell offers both need-based and merit-based aid. Whatever your situation, Grinnell tends to offer some hefty packages. I was accepted to a lot of places like the LACs you liked and when I got my Grinnell letter, my FA there made it cheaper than every other college I applied to. :o
Finally, I argue you should apply to Grinnell if this at all remotely sounds like a place you would enjoy because a) we love artsy people and b) the application’s free and there’s no supplemental essay. It’s as easy as pushing the apply button once you finish your common app essay, so why not? I applied to Grinnell without ever visiting. Once I got in, I visited and fell in love. If you ever plan a visit to Grinnell, I’d love to give you a personalized tour. If you have any questions that are more specific than what I answered in this post, feel free to message me.
Some other colleges to look into as well: Wellesley, Hartwick, Allegheny, Carleton