Q probably decided to be a teacher because teachers were the only female role models she had. As she grew up, she formed a view that education could make a big difference to individuals and to the world. She saw education as a way to influence the future. This derived, she thinks, from both her own experience of education and from the role models she saw.
She was very fortunate; she had terrific teachers. They impressed her both in what they taught and in the beliefs to which they adhered. She knew no other professional women, and grew up without knowing any university educated women outside of school. She is sure many of the women who taught her would not today be teachers. They would have perceived themselves as having fewer choices of career than women of their background would today.