This report presents selected findings from the school data files of the 2007-08 Schools and Staffing Survey (SASS). SASS is a nationally representative sample survey of public, private, and Bureau of Indian Education-funded (BIE) K-12 schools, principals, and teachers in the 50 states and the District of Columbia. The 2007-08 SASS sample is a school-based stratified probability-proportionate-to-size (PPS) sample. The 2005-06 Common Core of Data (CCD) served as a starting point for the public school sampling frame, and the 2005-06 Private School Universe Survey (PSS) served as a starting point for the private school sampling frame. The public school sample was designed so that national-, regional-, and state-level elementary, secondary, and combined public school estimates can be made. The private school sample was designed so that national-, regional-, and affiliation-level estimates can be produced. BIE schools on the 2005-06 CCD were sampled with certainty, and thus national estimates for BIE schools can be produced. The selected samples include about 9,800 public schools, 180 BIE schools, and 2,940 private schools; 5,250 public school districts; 9,800 public school principals, 180 BIE school principals, and 2,940 private school principals; 47,440 public school teachers, 750 BIE teachers, and 8,180 private school teachers; and 9,800 public school library media centers and 180 BIE school library media centers. The data were collected via mailed questionnaires with telephone and field follow-up. The first questionnaires were mailed in September 2007, and data collection ended in June 2008. The unit response rates varied from 72 percent for private school principals to 88 percent for public school districts. Nonresponse bias analyses were performed when survey response rates for major reporting groups were less than 85 percent. Selected findings are reported in tabular form and include: (1) In the 2007-08 school year, there were an estimated 119,150 K-12 schools in the United States: 87,190 traditional public, 3,560 public charter, 180 BIE-funded, and 28,220 private schools, among which 52 percent of traditional public, 55 percent of charter, 85 percent of BIE-funded, and 19 percent of private schools enrolled students received Title I services; (2) About 72 percent of all public elementary schools had students who were identified as limited-English-proficient (LEP), with most LEP students students enrolled in elementary schools; (3) The racial and ethnic composition of students enrolled in public schools was 58 percent non-Hispanic White, 20 percent Hispanic, 16 percent non-Hispanic Black, 4 percent Asian/Pacific Islander, and 1 percent American Indian/Alaska Native; Among private schools, the racial and ethnic composition was 74 percent non-Hispanic White, 10 percent non-Hispanic Black, 9 percent Hispanic, 6 percent Asian/Pacific Islander, and 1 percent American Indian/Alaska Native; (4) On average, 81 percent of 12th-graders graduated with a diploma in public schools in 2006-07: 86 percent in rural schools, 81 percent and 80 percent in schools located in suburban areas and towns, respectively, and 72 percent in urban schools; (5) Including full-time and part-time staff, public schools employed about 73,230 instructional coordinators, 81,670 librarians, 125,590 school counselors, 361,730 student support services professional staff, approximately 898,790 aides, 269,350 secretaries and other clerical support staff, 401,310 food service personnel, and 369,210 custodial maintenance and security personnel; and (6) About 63 percent of public and 37 percent of private schools employed staff with academic specialist or coaching assignments. Four appendices are included: (1) Standard Error Tables; (2) Methodology and Technical Notes; (3) Description of Data Files; and (4) Description of Variables. (Contains 18 tables and 14 footnotes.)