Teens Turning Green

So I have been trying to put things together for the Green Team Meeting and I have been having some trouble. I  can't get the maintenance department to contact me back. I talked to the Green Team Director and she said they are the most impossible people to deal with. So she told me to start from another venue. I decided to start with what I can do to educate my teachers. I have researched the markers that my teachers use on our white boards and know that they have harmful chemicals in them and that there is an alternative.
 
Here is my campaign idea...
I am going to buy some canvas, hopefully the biggest I can find. I will use the safe markers to make my poster and on the top of the poster I will write big...
 
HANDS AGAINEST HARMFUL CHEMICALS
   "We as students and teachers in the WFISD want to take a stand.
    A stand for something new, something better, something
    safer for our bodies. We as the WFISD body are
    commiitted to making this change to products that
    are safer for our generations and those to come.
    If you want to take a stand with us, use this marker
    to trace your hand and then sign your signature inside
    your hand. Let's be the change we want to see in our world"
 
I want people who are going to help me change this school be the ones that trace their hands. So when I get all these hands, what do I do? Who do I go to? City and Town Meetings? What's the next step?

-Megan