I’m currently in the college decision making process and I was lucky enough to be accepted to Amherst. Are there any current students/alumni who can speak about the difficulty of maintaining a good GPA at Amherst? I want to apply to medical school so of course maintaining a good GPA is a high priority. Thanks!
Hard. But easy for some. Can’t say without knowing you 
Have you read this? https://www.amherst.edu/campuslife/careers/gradstudy/health/guide
If you got into Amherst, you are likely capable (with hard work) of maintaining a GPA sufficient to have an excellent chance at Med Schools. Amherst has a pre-med advisor who very capably guides those on the path.
Amherst has an excellent success rate for applicants, Here is a report of Pre Med Outcomes from Amherst 2000-2004
Depends on what you define as a “good” GPA. 3.3? 3.5? 3.7? I’d say the majority of student at Amherst have something around a 3.5-3.6, which quite a few 3.7s. I, personally, have found it easier than I expected to maintain a good GPA. That being said, I am also not a hard sciences major.
This recent article shows “The Top 20 Universities with the Highest Average GPAs” - Amherst is #12 at 3.53
https://ripplematch.com/journal/article/the-top-20-universities-with-the-highest-average-gpas-84ef5edf/
Also note that for med school, GPA is broken down into Science GPA and total GPA with science courses, of course, being harder. This free site gives you a sense of what median GPAs and MCAT scores are for Med Schools. Your MCAT score will also play an roughly equal role in your chances.
https://www.prospectivedoctor.com/medical-school-chance-predictor-2/
There are numerous discussions regarding whether going to a rigorous college is adjusted for by Med School admissions as well as for schools that grade inflate or deflate. I would say don’t worry so much about this and choose the school with the best fit for the the education you are seeking.