It's been something I've been asked a lot, already. Most people have no idea, which is sad statement in itself.
I see the job involving three main responsibilities:
1) to be in contact with the Ward they represent, to hear what people's concerns are and to take these forward to the Board.
2) to examine the policies, actions, protocols and budgets presented by the administration to be sure they are in the best interest of children
3) to be a strong and passionate advocate for education to other levels of government, the media and the public in general.
On a side note, I think to do the job, you need to form working relationships with a lot of people: the other Trustees, the administration, parents, Principals and teachers, the ATA, CUPE, city councillors, community leagues, seniors, the media, MLA's and the Minister of Education, advocates ... the list is long.
Ray Martin described the job well: "It's what you make it."