[T]he committee said that it had held personal conversation upon the matter with a large number of members of the Faculty of Liberal Arts. Each and every one gave it as his opinion, formed carefully and deliberately after several years’ teaching and observation, that the interests of both men and women would be best served by a segregation of the sexes.”
Tufts remained coed, while Pennington went back to being an all-boys school. It stayed that way until 1972.
IS COEDUCATION A FAILURE? TUFTS AND PENNINGTON SAY “YES”: “A Menace to Any College,” Says President Hamilton of the Former — President Read of the Latter Announces a Change (PDF)
From May 8, 1910