This research brief provides a profile of America's teachers, using data from the 1987-88 and 1990-91 "Schools and Staffing Survey" and from Bureau of Labor Statistics employment projections for 1992 through 2005. The research brief lists demographic characteristics of elementary and secondary teachers in public and private schools, examines proportional representation of teachers to students, explores where teachers teach and what they teach, notes the incidence of vacant teaching positions and difficulty in filling vacant teaching positions, and profiles teachers who leave. The paper concludes that the number of teachers has increased in recent years and is expected to continue to increase. Few male students and students of color will have teachers with similar backgrounds and characteristics in years to come. Only about one percent of all approved teaching positions were vacant in 1990-91. Positions in special education, general elementary education subjects, and mathematics were more difficult to fill than those in other subject areas. Approximately 7 percent of all public school teachers with 1 to 3 years of experience left the profession between 1990-91 and 1991-92. The paper describes three data sources and provides a list of members of the American Council on Education Board of Directors. (Contains 13 references.) (JDD)