<p>Biliteracy - the use of two or more languages in and around writing- is an inescapable feature of lives and schools worldwide yet one which most educational policy and practice continue blithely to ignore. The continua of biliteracy featured in the present volume offers a comprehensive yet flexible model to guide educators researchers and policy-makers in designing carrying out and evaluating educational programs for the development of bilingual and multilingual learners each program adapted to its own specific context media and contents.</p>