I had assumed boarding school gender ratios to be relatively equal, and therefore a non-issue, but discovered that was not the case when I came across a 56:44 ratio at Loomis and a 54:46 ratio at Hill (each in favor of boys) and thought I should do some more digging. Surprisingly, boarding school review does not seem to have gender ratios, but niche does (they appear to be accurate, but I don’t know for sure).
It is clear that far more boys than girls attend coed boarding schools: only two schools I saw, Concord Academy (53:47) and Thacher (51:49), had majority girls.
Here’s an incomplete list, from my limited purview:
50:50 schools: Andover, Cate, George, Choate, Mercersburg, St. George’s, Episcopal
51:49 schools: St. Andrews, Middlesex
52:48 schools: Deerfield, Groton, Taft, Exeter, Lawrenceville, Williston, NMH, Masters
53:47 schools: Hotchkiss, St. Mark’s, Tabor, Governor’s
54:46 schools: Hill, Peddie
56:44 schools: Loomis, Kent, Berkshire
57:43 schools: Holderness
Does this matter for the student experience? Maybe or maybe not, but I do start to raise an eyebrow at 53:47 or greater and, in general, think 50:50 is more desirable than not in that regard. I think schools believe this too, but often go with 52:48 because it maintains a relative gender balance while not sacrificing admissions standards. (In case it’s not obvious, this is peripheral admissions data: a 52:48 with the same SSATs and admissions rate as a 50:50 is not really identical according to those metrics, but a hair lower. Stated differently, if a 50:50 wanted to go to 52:48, scores would slightly increase.)
What might be more relevant is that a small gender imbalance will lead to a larger one (or a lowering of admissions standards) when demographics change — and they are changing. 2009 babies are about 2 years away (when there was a major United States birth rate decline), so it will be difficult for schools to maintain existing ratios and current admission standards unless they markedly increase the proportion of international admits. 50/50 schools are obviously in a better position to weather this storm, simply because they will have one more tool in the toolbox and be able to go to 52:48, say, with no international student increase or admissions standard reduction (or less of one).