In the time of Hazrat Mahdi (as) Women will assume the duty of preaching Islam and They will become scholars on the Qur'an and the Sunnah

Imam Muhammad ibne Ali al-Baqir (peace be upon both of them) has said: ”DURING THE PERIOD OF HIS [IMAM AL-MAHDI’S] GOVERNMENT, WISDOM SHALL BE DISBURSED AMONG THE PEOPLE SUCH THAT A WOMAN SITTING IN HER HOUSE, WILL BE ABLE TO PASS JUDGMENT BY THE BOOK OF GOD.

Biharul Anwar, Volume 52, Page 352; al-Ghaybah of al-Numani