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Author/Creator
- National Center for Education Statistics40
- Educational Testing Service38
- United States. Office of Educational Research and Improvement2
- Lapointe, Archie1
- Mead, Nancy A.1
- National Assessment of Educational Progress (Project)1
- National Science Foundation (U.S.)1
- Phillips, Gary W.1
- Stigler, James W.1
- Yu, Ching C.1