1. The George Washington University, DC, USA
2. The University of Kansas, Lawrence, USA
3. California State University-East Bay, Hayward, USA
4. University of Missouri-St. Louis, USA
5. University of Oregon, Eugene, USA
6. American Institutes for Research, Arlington, VA, USA
7. Texas A&M University-Corpus Christi, USA
8. University of North Carolina-Charlotte, USA