I just noticed this thread (it was linked in a different thread). People were talking about girls learning. I noticed that (here and in some other threads that discuss this topic) no one mentioned the Riaz.
Piskei Riaz SotahPerek 1 Halacha 2:
??”? ???? ???? ????? ?? ????? ???? ??? ??’ ?????? ???? ?? ????? ??? ?? ??????? ?? ??? ????? ????? ???? ?????? ??????? ??????? ?????’ ?
Interestingly, all the other sources that have been mentioned about girls learning seem to hold like R’ Eliezer that b’etzem it’s bad, but certain circumstances can make an exception e.g. individuals, the times demand it etc. The Riaz however seems to lechatchila pasken like Ben Azzai:
????? ???? ????? ?? ?????? ???? ??? ???? ?? ??? ???? ??? ???? ????? ??? ?????? ??? ??
(Maybe Ben Azzai agrees to R’ Eliezer in theory in which case paskening like Ben Azzai would not necessarily be such a raya, although it would at least be a precedent for allowing factors to override the concerns.)