This codebook is one of a series designed to document the data collection of the 1990-91 Schools and Staffing Survey (SASS). The series contains the variable names and position numbers for all survey and sampling data. All data have been imputed to compensate for item nonresponse. This volume contains the restricted use codebooks for the SASS Bureau of Indian Affairs (BIA) schools, teachers, and administrators, presented as appendixes O, P, and Q to the earlier volumes. Volume 1 provides the essential background information for the survey, and volumes 2 and 3 are codebooks for the restricted-use and public-use survey data. Codes in this volume relate to a sample of 97 BIA schools, a sample of teachers, and the administrators from these schools. BIA schools include those operated by the BIA and those operated by Indian tribes and tribal organizations. User notes discuss the sample design and sample allocation, the community type, school type, tribal affiliation, and the state or federally recognized tribe. (SLD)