Este artículo está disponible en español. Léelo en español. At Frank Sparkes Elementary, words fly everywhere. On a recent Monday, kindergartners sang and danced as they learned about the silent e ...

An earlier study had raised doubts about the effectiveness of learning English in the first grade. Now, researchers have observed that it improves language performance over an extended period of time.

For years, those are the tools Carmen Nolasco used to study English on her own after immigrating to the United States from Mexico. Occasionally, she said, she offered to teach Spanish in exchange for ...