Answered by Shaykh Faraz Rabbani
At school a group of muslims have our own Jummah jammat lead by one of the students. He also gives the khutba however, recently a few girls object to his khutbas and would like to give their own during Jummah. My question towards you is can a women give khutba to a mixed group?

Walaikum assalam,
Based on Prophetic teachings and Ummatic consensus, the conditions for giving the Friday khutba are the same as leading mixed prayer at the mosque–one of which is to be male.
[Ibn Abidin, Radd al-Muhtar; Shurunbulali, Maraqi al-Falah]
And Allah alone gives success.
Faraz Rabbani