I have family members who have attended/are attending Tufts and Babson (which is part of the Babson/Olin/Wellesley consortium). One of them also was interested in Georgetown and a couple of visits were made. I know nothing about Barnard. The Babson student (a male) is really into sustainability and has taken a course at Wellesley related to environmental policy and will be taking a Babson- Olin- Wellesley team taught course in the future.
Wellesley has a beautiful, woodsy campus and a good environmental program, class sizes will definitely be smaller than the intro courses at Tufts and similar to slightly smaller for the specialty classes. This would be a good choice if you like being in an all female environment (plus a few males from Babson and Olin!). Wellesley is about a mile and a half from Babson, and Olin abuts Babson. Wellesley is a very wealthy suburban town, so it is beautiful. It has a cute town center (next to Wellesley College) but it is dry and there is not much for young people to do. Access to Boston is via a college shuttle bus. The subway runs to within a few miles of the campus, and Uber can be used to access it when the shuttle is not running. Wellesley also has cross registration with MIT.
Tufts has the Fletcher School which has one of the top IR masters programs in the world (along with Georgetown).
as well as one of the top undergrad IR programs. Georgetown has an advantage in location, but Tufts is a more liberal culture and, as a result, it is heavily into the area of environmental policy. Fletcher has partnerships and cross registration with MIT and Harvard which creates a government/policy academic cluster in Boston. Tufts undergrads can take classes at Fletcher, but not at MIT or Harvard. Tufts economics department is ranked around 50th in the world for environmental research output despite the fact that it does not offer a Phd program. Georgetown is similar in environmental research rank, but has a Phd program.
Tufts offers an environmental science major with a policy track and an IR major with an environmental track. It also offers an interdisciplinary major in environmental health and a major in environmental engineering. Sustainability and Human Health are two of the three interdisciplinary areas of research for engineering.
http://as.tufts.edu/environmentalStudies/curriculum/
http://ase.tufts.edu/ir/academics/
http://engineering.tufts.edu/cee/undergraduate/
Sustainability and Human Health
http://engineering.tufts.edu/research/
Tufts has a remote campus in the French Alps, which was the site of the signing of the first university sustainability agreement 25 years ago. If you like the outdoors then the Tufts Mountain Club has a “Loj” up in the White Mountains of New Hampshire (in Dartmouth country) and a couple of vans for transportation. That is about as different as you can get from Florida- especially in the winter. There is also a 2,000 acre reservation a couple of miles from Tufts if you need a quick hike or mountain bike ride.
http://ase.tufts.edu/europeanCenter/
http://ase.tufts.edu/europeanCenter/programs/talloires/courses.asp
https://tuftsmountainclub.org/loj/
Club sports at Tufts are popular and some are regionally and nationally ranked. Tlarge number of schools in and around Boston, make it fun. What are your sports?
http://www.gotuftsjumbos.com/information/club_sports
Tufts just hosted a university conference to commemorate the anniversary.
http://environment.tufts.edu/blog/2016/03/30/climate-change-the-role-of-the-university/
Tufts has an institute dedicated to the environment that partners with the Stockholm Institute Of The Environment (which has an office next to Tufts) Internships are available through these organizations, as well as others.
http://environment.tufts.edu/
http://www.sei-us.org/
Boston/Cambridge/Somerville is home to one of the largest Clean-tech business clusters and there is an Cleantec incubator called Greentown Labs a couple of miles from Tufts.
http://greentownlabs.org/
The current head of the EPA is a Tufts Alum (environmental health and policy) and a winner of the Nobel Peace Prize (for work on climate change on the IPCC) just moved from Fletcher to the School of Engineering.
https://en.wikipedia.org/wiki/Gina_McCarthy
http://fletcher.tufts.edu/Fletcher_Directory/Directory/Faculty%20Profile?personkey=67A797D9-CB21-4684-ADAF-388F7ED0DE39
In terms of Gender Studies, I assume Barnard and Wellesley are strong in this area. Tufts has a wider offering of courses than Geogetown, probably due to the more liberal culture.
http://ase.tufts.edu/wgss/documents/courseListFall2016.pdf
http://wgsp.georgetown.edu/courses/current
Good Luck - the world can certainly use more people who have both environmental and policy expertise…
Feel free to ask more questions