It is obvious from scripture that Priscilla taught Apollos.
We must remember that we are using terms that have changed in meaning over the centuries. For example the word, prophesy, is ancient times meant to teach.
From
www.dictionary.com the 8th definition listed is:
to teach religious subjects.
We must also remember that there was not just one mono-culture in the Roman world. For instance the culture of Rome was quite different from the culture of Athens. In Athens or other Ionian cities a woman would never be allowed to teach. In other cultures of that day a woman could teach. I am speaking her not just of religious topics, but of topics of any kind. In many of the cultures of that day women were not allowed to be educated. I am certainly glad that Paul did not write a letter to Athens and say that a woman should not be educated so as to make the message he preached of Christ more acceptable to those in Athens.
I do not know enough about the culture of Lystra, where Timothy lived, to know if they allowed women to be educated there or not ... or if they allowed women to teach. Can anyone help me here ... and if so please give me a link that I can follow up and read. As Timothy's father is never mentioned it seems pretty obvious that his mother, a woman, taught him. Now I know someone is going to argue, but that was when he was a child. That obviously is ture, but we are never told that she did not continue to teach him when he was a young man. Guess that is a question we will learn the answer to when we are in heaven.