These French Jewish women felt left out. Though France is home to the world’s third largest Jewish community, Tali Trèves-Fitoussi, 29, and Myriam Ackerman Sommer, 25, had no place to seriously study Torah and Talmud with other women. They were looking for rigor, and the few programs organized for Jewish women in the past had been short-lived, or presented few opportunities for in-depth study. So they built a school themselves. They call it “Kol-Elles,” a play on the word kollel — in Hebrew, a school for the advanced study or Torah and rabbinic literature — and “elles” or the feminine...