I would consider the following:
-Would you rather graduate in 3 years (with possibly a couple of electives, but no switching major) or 4 years (some limited ability to double major or switch major?
-Structure of each exact course.
Durham Anthropology: https://www.dur.ac.uk/courses/info/?id=11577&title=Anthropology&code=L602&type=BA&year=2018#coursecontent
In year 1 you take 4 compulsory Anthro modules, and 2 electives including ability to study a foreign language.
People and Cultures
Human Evolution and Diversity
Introduction to Anthropological Theories and Methods
Health, Illness and Society. You can look on the website for year 2 and 3.
St Andrews Anthropology: (take 3 modules total per year)
https://www.dur.ac.uk/courses/info/?id=11577&title=Anthropology&code=L602&type=BA&year=2018#coursecontent
1 required module first year (plus 2 electives): Ways of Thinking, 2 required as a 2d yea: Foundations of Social Anthropology and Ethnographic encounters, before starting Honours for 3d and 4th year.
Which seems more exciting?
-Look at different opportunities in fieldwork. I think all year 2 students at Durham do fieldwork? https://www.dur.ac.uk/anthropology/fieldwork/2018/
St Andrews probably has fieldwork opportunities too, I just don’t know Anthro & didn’t see it really fast on their website, so maybe e-mail their department?
-Look at the differences in fees for international students. 3 year or 4 year, St Andrews might be a bit more per year?
- Look at the difference in structure with the college system at Durham and where you might live. Partly might depend on what college you get into? On the Bailey or a Hill college, and which you personally prefer? You won't find out your likely dorm situation until July with St Andrews, but you will know your college for Durham much earlier, in late winter/early spring, I think?
-Are you American and if so, would you prefer more or fewer of your countrymen around? If can be fun to be part of a large group of expats, but you might also like being around more Brits?
-Do you have a cultural preference towards either Scotland or northern England?
- Durham is on the mainline to London, about 3 hours away on a fast train, and Newcastle is about 10 minutes away by train. V St Andrews is a bit more isolated, about 1- 1 1/2 hours from Edinburgh. But Edinburgh is really great.
-Sports and other extra-curriculars-- which has more of what you like?
If you can’t visit, I would e-mail the departments and start following student newspaper sites for both to get a more in-depth feel. Once you get accepted to a particular college, you can e-mail them as well.
Both seem to be great places, I think either choice might be a good one.