Databases 39 Population 20 Statistics 14 Maps 13 Housing 11 Education 9 Educational surveys 9 more ... College attendance 7 High school graduates 7 Postsecondary education 7 College costs 6 Demographic surveys 6 States 6 Agriculture 5 Industrial statistics 5 Geology, Stratigraphic 4 Longitudinal studies 4 Occupations 4 Private schools 4 Public schools 4 School management and organization 4 Teachers 4 Vocational guidance 4 Breeding 3 Buildings 3 Coal 3 Coal reserves 3 Computer-assisted instruction 3 Economic conditions 3 Estimates 3 less ...