
Education in States and Nations: 1991
SOURCE: American Federation of Teachers, Research Department, Survey and Analysis of Salary Trends, 1993, Table IV-6. U.S. Department of Education, , Condition of Education, 1993, Table 49-3; Schools and Staffing Survey, 1990-91. Educational Testing Service, International Assessment of Education Progress, Learning Mathematics, Figure 5.2. For 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.