Table B-2. Comparisons between frame distribution and base-weighted and final-weighted respondent distributions for school principals with an indication of potential sources of bias, by school type: 2007–08

Characteristics of Public, Private, and Bureau of Indian Education Elementary and Secondary School Principals in the United States:
Results from the 2007–08 Schools and Staffing Survey

NCES 2009-323
June 2009

Table B-2. Comparisons between frame distribution and base-weighted and final-weighted respondent distributions for school principals with an indication of potential sources of bias, by school type: 2007–08

Potential source of bias	Base-weighted respondent distribution	Final-weighted respondent distribution
Public
Minnesota, enrollment (200-500 students)	x	x
National, enrollment (1-100 students)		x
National, locale (central city)	x	x
National, locale (rural)	x
Nebraska, school level (secondary)		x
State (California)	x
Virginia, locale (suburban and rural)		x
Private
Affiliation (Catholic – Diocesan)	x
Affiliation (Catholic – Parochial)	x
Affiliation (Nonsectarian – regular)	x	x
Baptist, enrollment (1-100 and 200-499 students)		x
Baptist, school level (elementary and combined)	x
Jewish, locale (central city)	x	x
Jewish, school level (elementary)	x
Other religious, locale (suburban)		x
NOTE: x denotes comparisons that are a potential source of bias. No potential bias was evident among the Bureau of Indian Education-funded schools due, to some extent, to small subpopulation cell sizes.
SOURCE: U.S. Department of Education, National Center for Education Statistics, Schools andStaffing Survey (SASS), "Public School Principal, BIE School Principal, and Private School PrincipalData Files," 2007–08.