AMaybe it isn't the school systems, maybe its the genes.
I think it has more to do with the comfort level of one's life, and also their exposure to the truth during that life, than IQ or genes.
Also, it takes a long time to break down the barriers that get built over the years. I am a case in point. It's a long story but I got my first bit of truth in 1993, but it wasn't until 1997 when I was seriously wronged that I started to research things for myself and found that I really was an ignorant bastard.
It took an almost catastrophic event in my life to wake me up, otherwise I might still be walking around, fat, dumb and happy.
I'm not stupid. In fact, I am borderline genius, which explains my eccentricity at times.
Your efforts may well be the seed that gets planted in the minds of all of those "stupid" folks, the equivalent of my 1993 encounter with truth.
And maybe next year, or next week they will find themselves in dire circumstance with the law (civilly or criminally) asking, don't I have some kind of rights? And maybe then they will actually READ the US Constitution looking for those rights, and with that hunger for the truth, actually find that the life they had been... I don't want to say living... it's more like following, all those years was a big fat lie.
Once you see the truth on paper, in black and white, in the form of the Constitution, you see that every politician you ever heard, and every media talking head you ever watched on TV had lied to you. It is a big, cold, wet slap in the face. But now, everyone that had tried to enlighten you, and that you had thought were the crazies, you see plain as day were actually the truth tellers.