Which Jewish movement is credited with introducing the modern bat mitzvah ceremony in the United States?

Reconstructionist Judaism is credited with introducing the modern bat mitzvah ceremony in the United States.

The movement’s founder, Rabbi Mordecai M. Kaplan, helped create an early landmark when his daughter Judith Kaplan Eisenstein celebrated a bat mitzvah in New York City in 1922. That event is widely cited as the first American bat mitzvah ceremony of the modern type.

The practice later spread beyond Reconstructionist congregations. Reform and Conservative communities increasingly adopted bat mitzvah ceremonies, and many Orthodox communities developed their own forms of marking girls’ religious study and maturity. The content of the observance remains diverse.

Calling Reconstructionist Judaism the movement credited with introducing the modern ceremony does not mean it invented every earlier form of female Jewish coming-of-age recognition. Jewish communities had older traditions of marking girls’ religious development, but the American synagogue ceremony associated with bat mitzvah is especially linked to this twentieth-century development.