What is the ruling of Islamic law regarding the mixing of a group of female students with one male student in dawah lessons?

A Muslim is honored to invite to Allah the Almighty, and this is a vast field, and the Muslim woman has a great role in it, but it has regulations that must be observed. Inviting to Allah does not permit practicing what Allah has forbidden. Rather, the caller is required to apply Allah's commands and to be a good example. Therefore, it is not permissible for women to mix with men in it, so the presence of this male student with you is not justified.