“A democratic society must seek to give every young person, whether native-born or newcomer, the knowledge and skills to succeed as an adult. In a political system that relies on the participation of informed citizens, everyone should, at a minimum, learn to speak, read and write a common language. Those who would sustain our democratic life must understand its history. Tailoring children's education to the color of their skin, their national origins, or their presumed ethnicity is in some fundamental sense contrary to our nation's founding ideals of democracy, equality and opportunity.”