This booklet focuses on the reading literacy test scores of students in the grade levels where most 9- and 14-year-olds were to be found in 32 national systems of education. Data were collected from 9,073 schools, 10,518 teachers, and 210,059 students. The booklet describes the achievement levels of carefully selected probability samples of students in three domains of reading literacy and makes some preliminary interpretations of the results. Chapters are: (1) What Is the Study About?; (2) A Word on International Comparisons; (3) How Well Do Nine-Year-Olds Read around the World?; (4) How Well Do Fourteen-Year-Olds Read around the World?; (5) How Do High-Achieving Countries Differ from Low-Achieving Countries?; (6) Differences in Achievement by Gender, Home Language and Urban-Rural Location; (7) Other Influences on Achievement; (8) How Does One become a Good Reader?; and (9) Voluntary Reading Patterns. Seven appendixes include: a list of the personnel of the IEA Reading Literacy Study; the international validity of the IEA Reading Literacy Tests; a rationale for the scores used; target populations and samples; adjustment of age differences; tables of correlation; and value for figures found in the text. (RS)