By 1939, there were about 250 schools established and over 40,000 students in Bais Yaakov schools. One of her students was Rebbetzin Vichna Kaplan, founder of the first Bais Yaakov high school and teachers' seminary in America. In her will, she wrote: "My dear girls, you are going out into the great world. Your task is to plant the holy seed in the souls of pure children. In a sense, the destiny of Israel of old is in your hands." The admiration was mutual, and the girls within the movement called her "Sarah Imeinu," which translates to "Our Mother Sarah." She had no children of her own, so the girls of the movement filled that void for her.