On Wednesday nights, the Rav ז’ל used to give a Chumash Shiur. How did this Shiur originate? R’ Ari Kahn relates that one evening the Rav looked around his apartment and asked his Shamoshim (an entourage who assisted the Rav with his needs) why they were there: didn’t they have families, and if they didn’t why weren’t they looking. Some of the Shamoshim responded that life was not easy. They didn’t feel at ease interacting with the Shadchanim industry; equally, they were loath to “hang out” in the front of the Stern College for Women as if they were “on the prowl”.
The Rav responded that he would begin a Shiur for both young ladies and young men. He, the Rav, would make sure that the young ladies would attend; he’d leave the rest up to them. With that, the new Shiur commenced.
Of course, the right-wing would only see a “mixed” Shiur, so to speak, and condemn.