There they were, parents and students from the New Explorations Into Science, Technology and Math school, banging drums and shaking maracas in front of Cipriani Wall Street to disrupt the black-tie benefit where Schools Chancellor Joel I. Klein was speaking. There they were again, hundreds representing NEST, as the school is known, passionately chanting "Save the NEST" in front of City Hall. And there they were, hoisting "Don't Tread on Our School" signs on a wooded patch of East Hampton near the Ross School, a private school founded by Courtney Sale Ross, the wealthy widow of a former Time Warner...