Who participated in the NIES?
About 9,900 American Indian/Alaska Native (AI/AN) fourth-graders and 8,400 eighth-graders were assessed in either reading or mathematics in the 2009 NIES Part I. In addition to these AI/AN students who were assessed in Part I, fourth- and eighth-grade AI/AN students who participated in the NAEP science assessment were also selected to participate in the NIES Part II, which resulted in about 12,300 AI/AN fourth-graders and 10,400 eighth-graders participating in Part II. Students were identified as AI/AN based on official school records. The Part I and Part II samples included students attending public, private, Department of Defense, and Bureau of Indian Education (BIE) schools. Read more about the sample design of the study.