Lineaged Wicca is organised into covens of initiated priests and priestesses. Covens are autonomous, and are generally headed by a High Priest and a High Priestess working in partnership, being a couple who have each been through their first, second and third degrees of initiation. Occasionally the leaders of a coven are only second-degree initiates, in which case they come under the rule of the parent coven. Initiation and training of new priesthood is most often performed within a coven environment, but this is not a necessity, and a few initiated Wiccans are unaffiliated with any coven