CTlawyer -“There are many Frum day schools that are mixed gender enrollment in the US”
ZD -“And before you say Yiddishkeit is different, There are many Co-Ed yeshivas and Dayschools who are co-ed because they could not financially survive without being co-ed”
Those Frum schools that do that because of the parent clientele. It’s not ideal. It’s usually Kiruv types of schools!