There is certainly room at the moment, and probably will be for all time, for single-sex institutions.
The monastery was not a single-sex institution.
In the modern form of liberal arts in the United States, both sexes are taught, although there are still a few single-sex institutions.
While most German schools were single-sex institutions at that time, the Rütli school was co-educational.
It saddens me greatly to see so many single-sex institutions changing their admissions policies.
High schools in Iraq are single-sex institutions.
But the attrition has slowed considerably since then, and has been stable for three years despite sometimes wrenching debates about remaining single-sex institutions.
The monastry was not a single-sex institution.
The answer lies in how a single-sex institution connects with the society as a whole.
In Bangladesh, a large number of city schools and colleges are single-sex institutions except for universities.