Now, considering I do statistics I'm going to say three things. Firstly, you shouldn't tell us which side you are supporting, secondly, a more open question would help your results as having closed questions means we have to choose a straight yes or no asnwer, which distorts the results, and finally this is a completely biased sample of people you are asking. However, considering it is an English assignment and not a statistical one, you should be fine as you will be focusing on a completely different part of the study.
Now that that's out of the way, I'm all for you writing the paper and (hopefully) showing that video games do not cause violent behaviour as it would 'help our case' as it were and show the world (well your English teacher) that video games aren't as bad as many suspect