Specifically public school programs in the US or public school early intervention programs anywhere in the world? Remember this is an international forum, you don't want to end up with results that ruin your research because they are from a totally different kind of program than you are researching.
Would indicate you probably only mean US based programs, as a gift card to Target is not a whole heap of use to me, but if you are including international participants and can interview using something like MSN then I'm in.