Conclusion: what have we learned?

The results of the nine studies reported on in this special issue suggest quite clearly that a book-based program consistently accelerates the language acquisition of school children in situations where (1) they are learning a second language; (2) they have minimal access to interesting reading materials; and (3) their teachers are themselves teaching in a second language. In this closing chapter, a set of generalizations derived from these studies is presented. More specifically, three areas are discussed: (1) the link with other empirical studies; (2) theoretical issues raised by the results of the studies; and (3) policy questions raised by the results of the studies.