This book provides an internationally comparable set of indicators on educational provision for students with disabilities, learning difficulties, and disadvantages (DDD). It highlights the number of students involved, where they are educated—special schools, special classes, or regular classes— and in what phases of education: preprimary, primary, lower secondary, or upper secondary education. It also includes information on student-teacher ratios and discusses policy implications concerning special education. This new edition also presents, for the first time, trends in the data from 1999 to 2003 for students with DDD. A consistent finding in this volume is the preponderance of the number of boys over girls among DDD students in a wide range of analyses. Whether done by location, cross-national or national category, age of student, or phase of education, there is a higher percentage of males, typically a 60/40 split, across most OECD countries.