What do we do?

I usually wait to do my reflections, but tonight I left class burdened, with such a heavy heart. To be completely honest, at the end of class, I had to fight tears. I know that may sound extreme and overly emotional, but I am completely appalled by the state of our education system and the disservice that we are doing to our children...The question remains, however: what do we do?
I was a part of Teach For America whose sole mission was to "close the achievement gap"; we watched Waiting for Superman, which I believe sought to shine light on the problems in our education system and create change; I worked in a charter school that attempted to create change in the lives of students that they believed couldn't be done as effectively in a public school; we watched footage on Michelle Rhee who seemed to have such a passion and fire to see the districts reformed and improved; we saw how excited people were when No Child Left Behind was first signed in because people believed that true change was going to take place in our educational system... I believe that all of these things have been created or done with the best of intentions, but all have fallen short. None have created the change that they promised. So my question remains: what do we do?
There are students not realizing their full potential, and there are schools and teachers and bureaucrats that are directly contributing to that problem instead of making it better. I don't think that all, if any, of these people went into their profession with the wrong heart or the wrong motives...so what happened? What happened along the way that made their goals and their actions so convoluted?
When I see the dire state that our education system is in, I want to become an agent of change. I want to create change and reform that no one has been able to create... but then that fact makes me stop in my tracks. I want to create the change that no one has seemingly been able to create. Why? Why haven't they been able to? Instead of improving schools and creating lasting reform, many of the people who labeled themselves as "agents of change" have been villainized and mocked for their attempts. I truly do not believe that any of those people began their mission or their fight for reform seeing their failure as the end result, but they ended up there somehow...what is to say that if I attempt to do the same that I will not end up like them? So the question remains: what do we do?
I will admit, I am extremely overwhelmed by the thought of trying to ever change or reform our extremely broken educational system...I do not have some inspired thought to completely override this feeling of being utterly overwhelmed, but I will say that I am too driven by a sense of purpose to sit idly by and just accept our education system as it is. I honestly have no idea what exactly this means for me yet, and my sense of purpose and determination will always probably be somewhat cloudy and will sometimes feel rather directionless, but what I will say is that I feel extremely blessed that I have found a vocation that I have this much passion for, and I will try to do my calling justice...whatever that may be, and however that may look.