Maths dispute - a very simple simple exponents question

I had an indices test and I got the results back today (I didn't too shabby).

There was one question though that concerned me.

It is this one:

$\displaystyle -3^2 $

It looks EXACTLY like this. No brackets or anything. Just $\displaystyle -3^2 $

I wrote $\displaystyle -9 $ and my teacher marked it wrong. I have asked my friends and they are all divded

My teacher said it was 9 but I thought i was only 9 when it was $\displaystyle (-3)^2 $

Who is right?!? :S