Can you elaborate on the involvement of women in greek drama?

Women weren't allowed to be actors, so they had the men play women. Being a man playing a woman was considered degrading to the actor so no one really ever wanted the part of a woman so the play writes stopped including woman in plays as much until the Shakespeare times where you end up having Romeo and Juliet, & the Helena in Midsummer nights dream. But as far as greek goes, women weren't involved that much if not at all because they were thought of as less. 

E. search it on internet