The Schools and Staffing Survey, 2011-12 (SASS 11-12), is a study that is part of the Schools and Staffing Survey (SASS) program. SASS 11-12 (https://nces.ed.gov/surveys/sass/) is a survey that covers a wide range of topics from teacher demand, teacher and principal characteristics, general conditions in schools, principals' and teachers' perceptions of school climate and problems in their schools, teacher compensation, district hiring and retention practices, to basic characteristics of the student population. The survey was conducted using mail, email, and telephone interviews. Schools, teachers, librarians, and principals were sampled. Key statistics produced from SASS 11-12 are how many teachers and principals remained at the same school, moved to another school, or left the profession in the year following the SASS administration.

The Schools and Staffing Survey, 1990-91 (SASS 90-91), is a study that is part of the Schools and Staffing Survey (SASS) program; program data is available since 1987-88 at . SASS 90-91 (https://nces.ed.gov/surveys/sass) is a cross-sectional survey that covers a wide range of topics from teacher demand, teacher and principal characteristics, general conditions in schools, principals' and teachers' perceptions of school climate and problems in their schools, teacher compensation, district hiring and retention practices, to basic characteristics of the student population. The survey was conducted using mail, paper questionnaires, and telephone interviews. Teachers, librarians, principals, and school coordinators were sampled. Key statistics produced from SASS 90-91 are average teacher salaries and the percentage of teachers by teaching field.

The 1991-92 Teacher Follow-Up Survey (TFS 91-92) is a longitudinal follow-up to the 1990-91 Schools and Staffing Survey (SASS 90-91). TFS 91-92 (https://nces.ed.gov/surveys/sass/index.asp) is used to determine how many teachers remained at the same school, moved to another school, or left the profession in the year following the Schools and Staffing Survey (SASS) administration. TFS 91-92 was administered to a sample of teachers who completed the SASS in the previous year. Key statistics found from 1991-92 TFS are the percentage of teachers who remained at the same school, the percentage of teachers who moved to another school, or the percentage of teachers who left the profession in the year following the 1990-91 Schools and Staffing Survey (SASS) administration.

The Schools and Staffing Survey, 1987-88 (SASS 87-88), is the first year of the Schools and Staffing Survey (SASS) program. Program data are available since 1987-88 at . SASS 87-88 is a system of surveys that cover a wide range of topics from teacher demand, teacher and principal characteristics, general conditions in schools, principals' and teachers'perceptions of school climate and problems in their schools, teacher compensation, district hiring and retention policies, to basic characteristics of the student population. The surveys were conducted using mail, paper questionnaires, and telephone interviews. Teachers, principals, school district coordinators and school coordinators were sampled. Key statistics produced from SASS 87-88 are average teacher salaries and the percentage of teachers by teaching field. Key statistics from the follow-up to SASS 87-88 (TFS 88-89) are the percentage of teachers staying at the same school, moving to a new school, or leaving the teaching profession. Prior to the founding of SASS in 1987-88, there were three sets of Elementary and Secondary School Division surveys administered by the National Center for Education Statistics in different years: the “Teacher Demand and Shortage Surveys, & the “Public and Private School Surveys,and the “Teacher Surveys. The public and private sector versions of each of these three survey types were conducted in alternate years.

The Schools and Staffing Survey, 2003-04 (SASS 03-04), is a study that is part of the Schools and Staffing Survey (SASS) program. SASS 03-04 (https://nces.ed.gov/surveys/sass) is a survey that covers a wide range of topics from teacher demand, teacher and principal characteristics, general conditions in schools, principals' and teachers' perceptions of school climate and problems in their schools, teacher compensation, district hiring and retention practices, to basic characteristics of the student population. The survey was conducted using mail, email, paper questionnaires, and telephone interviews. Teachers, librarians, principals, and school coordinators were sampled. Key statistics produced from SASS 03-04 are how many teachers and principals remained at the same school, moved to another school, or left the profession in the year following the SASS administration.

The 2012-13 Teacher Follow-Up Survey (TFS 12/13) is a longitudinal follow-up to the 2011-12 Schools and Staffing Survey (SASS 11-12). TFS 12/13 (https://nces.ed.gov/surveys/sass/) determines how many teachers remained at the same school, moved to another school, or left the profession in the year following the Schools and Staffing Survey (SASS) administration. TFS 12/13 was administered to a sample of teachers who completed the SASS in the previous year. The majority of TFS 12/13 is a web-based survey, but it also has paper component. Key statistics produced from TFS 12/13 are how many teachers remained at the same school, moved to another school, or left the profession in the year following the Schools and Staffing Survey (SASS) administration.

The 1999-2000 Schools and Staffing Survey is a study that is part of the Schools and Staffing Survey (SASS) program; program data is available since 1987-88 at . SASS 99-00 (https://nces.ed.gov/surveys/sass) is a survey that covers a wide range of topics from teacher demand, teacher and principal characteristics, general conditions in schools, principals' and teachers' perceptions of school climate and problems in their schools, teacher compensation, district hiring and retention practices, to basic characteristics of the student population. The survey was conducted using mail, email, paper questionnaires, and telephone interviews. Teachers, librarians, principals, and school coordinators were sampled. Key statistics produced from SASS 99-00 are how many teachers and principals remained at the same school, moved to another school, or left the profession in the year following the SASS administration.

The 2012-13 Principal Follow-Up Survey (PFS 12/13) is a longitudinal follow-up to the 2011-12 Schools and Staffing Survey (SASS 11-12) study. PFS 12/13 (https://nces.ed.gov/surveys/sass/) determined how many principals remained at the same school, moved to another school, or left the profession in the year following the 2011-12 Schools and Staffing Survey (SASS 11-12) administration. PFS 12/13 was administered to a sample of principals who completed the SASS 11-12 principal questionnaire. Due to its brevity and lack of skip patterns, PFS 12/13 was primarily a mail-based data collection with telephone and email follow-up.

Table 1. Number and percentage distribution of private schools, students, and full-time equivalent (FTE) teachers, by selected school characteristics: United States, 2017–18