Education in States and Nations: 1991
*Figure represents the unweighted average of two cities, São Paoulo and Fortaleza
SOURCE: Educational Testing Service, International Assessment of Education Progress, Learning Mathematics, Figure 5.2. For West Germany: International Association for the Evaluation of Educational Achievement (IEA) Study of Reading Literacy, 1992. For Japan: Ministry of Education, Science, and Culture, National Institute of Educational Research, Government of Japan, 1992. U.S. Department of Education, , Schools and Staffing Survey, 1990-91 (based on Table 49-3 in the Condition of Education, 1993).