Information is presented about public school teachers and other holders of certificates in Colorado in 1991. The average salary for the 33,093 public school teachers was $33,072, representing a 3.9% increase over the 1990 average salary. This marked the third consecutive year that the average teacher salary in Colorado was below the national average. Classroom teachers represented 52.9% of the total certified and non-certified staff. About 70% of the teachers, 35% of the principals, and 7% of the superintendents were female. American Indians, Asian Americans, Blacks, and Hispanic Americans represented 9.3% of the state's teachers, but 25.1% of the student population. These facts and others are presented in 12 tables: (1) average salaries of teachers and administrators by district; (2) full-time equivalent and average salaries by district; (3) certified personnel by college preparation; (4) selected certified personnel by salary range and school district size; (5) average age of certified personnel by position and sex; (6) certified personnel by position, ethnic/racial group, and sex; (7) ethnic/racial personnel for selected positions; (8) total certified personnel and classroom teachers; (9) pupil membership and classroom teachers; (10) full-time equivalents by position; (11) certified personnel by district and ethnic/racial group; and (12) full-time equivalents of non-certified personnel. Three illustrations in graph form indicate trends relating to teachers. (SLD)