When parents are looking for an eleven plus tutor they take many factors into account. In a few cases there could possibly be some common elements irrespective of the sex of their own child.
if the tutor is a male or a female
if their child shows any preference for being taught by a teacher of either sex
if the tutor is likely to show any bias towards a boy or a girl
Of course the great majority of parents will want a successful, broad thinking and accomplished tutor. They will want experience and confidence. They will want a tutor who can talk about what happened in the lesson.