Whole family moving

Hi,

I have an offer to teach in Izmir next Jan 2010. My family will come with me to Izmir including my wife and my son.

I taught in fashion design for years in Hong Kong and took a career break last summer 2008 and pursued a Master Degree in Design Management at Northumbria University, UK.
I finished the course and prepare to attend a graduation ceremony in Dec 09.

I would like to know if my wife holds a dependent visa upon arrival to Izmir, can she allow to work? And can she change her visa status after arriving to Izmir?

Besides, as we can only speak English, I think my son can only study an international school. What school can you recommend? Please kindly reply and thanks.

Best regards

David