Not my first rodeo, but still need some ideas [environmental studies, 4.0 GPA, 1480 PSAT]

[NiceUnparticularMan]

I also immediately thought of Macalester.

Hobart and William Smith might be a little too small, but they have a really popular Environmental Studies program, and what I would consider to be a potentially great location, and robust merit program:

Environmental Studies | Academics | Hobart and William Smith