Tamar Lewin:

When Miriam Flores was in third grade at Coronado Elementary School, her mother, also named Miriam, was surprised to learn that she was getting in trouble.
“Her teacher said she was talking in class,” said Mrs. Flores, who speaks limited English. “She had always been a quiet child, but she said she had to ask other students what the teacher was saying because she didn’t understand.”
At the time, the state provided only $150 extra for each non-English-speaking student like Miriam. Few teachers were trained to help English language learners, and many students in this small, largely Hispanic border town were floundering. So Mrs. Flores and other parents sued under a federal civil rights law, charging that non-English-speaking children were being denied equal educational opportunity.
Much has changed since then: Miriam is now a 23-year-old college student. Under a new Arizona law, Coronado Elementary provides four hours a day of intensive English, in small classes, for students struggling with the language. These days, the Nogales schools spend 10 times as much on their English language learners.
Next month, after 17 years of litigation, the United States Supreme Court will rule on the Flores case, deciding whether Arizona is complying with federal laws requiring public schools to teach children to speak English.