Andover has more of a college feel than other New England boarding schools.
Most rural LACs replicate the boarding school bubble effect.
Kenyon College, Bowdoin College, Davidson College, Bates College, Colorado College, Sewanee-University of the South, Connecticut College, Denison University, St. Lawrence University, and Williams College are some “colleges like New England boarding schools”.
In my opinion, Kenyon College and Bowdoin College are two “colleges like New England boarding schools”. Any search seeking to replicate the feel of a New England boarding school might want to start looking into these two prestigious LACs.
Sewanee-University of the South shares its campus with a boarding school.
Obviously this is a subjective matter; for example, I do not see the University of Richmond–mentioned above–as resembling a New England boarding school since it is a bit too large & too suburban / urban. In my opinion, a main characteristic of a New England boarding school is the isolated community feel which leads to a campus culture shared by all. Isolation forces the community to bond. While this may be attractive at a young age when first venturing away from home, for some it may be too constricting & a bit suffocating as a 19 or 20 or 21 year old young adult. Purely subjective.
P.S. Among the Ivy League schools, I think that Dartmouth College most resembles a New England boarding school–although not in an overly restrictive fashion.