Author
Educational Resources Information Center (U.S.)
212
United States. Office of Educational Research and Improvement
96
National Institute of Education (U.S.)
78
National Center for Education Statistics
67
United States. Department of Education
55
EBSCOhost
52
United States. Administration on Aging
42
ERIC Clearinghouse for Social Studies/Social Science Education
35
ERIC Clearinghouse for Science, Mathematics, and Environmental Education
29
Educational Testing Service
29
United States. National Assessment Governing Board
27
United States. National Highway Traffic Safety Administration
25
ERIC Clearinghouse on Languages and Linguistics
23
National Assessment of Educational Progress (Project)
23
ERIC Clearinghouse on Reading and Communication Skills
21
U.S. Citizenship and Immigration Services,
20
United States. National Aeronautics and Space Administration
20
Council of Chief State School Officers
18
National Center for Education Statistics,
16
SpringerLink (Online service)
16
Team Nutrition (Program : U.S.)
16
Institute of Education Sciences (U.S.)
13
ERIC Clearinghouse on Rural Education and Small Schools
12
United States. Congress. House. Committee on Science
12
United States. Congress. Senate. Committee on Indian Affairs,
12
American Institutes for Research
11
Disinger, John F.
11
SpringerLink (Online Service)
11
United States. Internal Revenue Service
11
United States. National Assessment Governing Board,
11
United States. Office of Vocational and Adult Education
11
Mometrix Exam Secrets Test Prep Team
10
Robson, Barbara
10
Taẓhay, Ḥabīb Allāh, 1932-
10
United States. Congress. House. Committee on Armed Services. Oversight and Investigations Subcommittee
10
Association for Supervision and Curriculum Development
9
Eisenhower National Clearinghouse for Mathematics and Science Education
9
National Center for Research in Vocational Education (U.S.)
9
National Clearinghouse for Bilingual Education
9
National Endowment for the Arts
9
Rocky Mountain Research Station (Fort Collins, Colo.),
9
United States,
9
United States. Department of Education,
9
United States. Office of Bilingual Education and Minority Languages Affairs
9
Geological Survey (U.S.)
8
Library of Congress. Congressional Research Service,
8
Michigan State University. Institute for Research on Teaching
8
Mullis, Ina V. S.
8
National Center for Education Evaluation and Regional Assistance (U.S.)
8
Oxford Scholarship Online
8
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