At the end of compulsory schooling, a quarter of European adolescents do not meet the minimal standards in reading literacy required for life-long learning and a satisfactory private and professional life (cf. the PISA-surveys). Funded by the European Commission (2006-2009), the ADORE Project «Teaching Struggling Adolescent Readers – A Comparative Study of Good Practice in European Countries» involved researchers and practitioners from the following 11 European countries: Austria, Belgium, Estonia, Finland, Germany, Hungary, Italy, Norway, Poland, Romania, Switzerland. During a 2-year-investigation period, transnational teams observed extraordinary examples of classroom instruction in all respective countries and identified key elements of good practice concerning reading instruction on different levels: classroom practice, schools, communities and national educational systems. The ADORE-book intends to be a guide for decision-makers and practitioners who want to improve the reading instruction for struggling adolescent readers.