Transferring to Stanford

I’m a freshman at Davidson thinking of transferring. I’m looking at Stanford, CU Boulder, UC Davis, Amherst and Macalester (they’re all very different I know). Stanford would be my top choice so I was wondering what you think my chances are?
In high school I had a gpa of 3.78 uw, 4.2 w
ACT 33 composite
Right now I have an A in all my classes (medical ethics/philosophy 160, Spanish conversation and composition/Spanish 260, calc 2/math 130, environmental social science/enviro 202)
I’m currently involved in the animal welfare club (planning on being a leader of the club next semester), environmental action coalition, queers and allies, ortaculture (we advocate for better/fairer admission policies and more care for transgender people), Im also trying to start a food waste club or a branch of the enviro club so dining services across campus will compost and the dining hall put its leftovers to better use.
I’m also a work-study student doing research projects for Spanish professors (was doing 8 hours a week, but one of my professors took a medical leave so now it’s 5) and tutoring a 9th grader in math–I may tutor a 10th grader as well
And I’m interested in studying environmental studies
Thanks!

Your chances to CU Boulder, UC Davis and Macalester are good. Given you’re already at a liberal arts school, I would say Amherst is a reach. With respect to Stanford, you can look at their 2017 transfer class profile here:
https://news.stanford.edu/2017/11/01/small-mighty-cohort-transfer-students-joins-stanford-community/