This report analyzes the base salary trends of Minnesota's school teachers over the past two decades. At the statewide level, the report examines teacher salary trends both in nominal dollars and after statistically controlling for price inflation, increasing teacher training and experience, and increasing urbanization of the work force. Salary trends are also analyzed at the substate level, stratifying by geographic regions and by school district type. Minnesota teacher salary trends are then compared to those in surrounding states and the nation as a whole. Since 1982, when a budgetary crisis eliminated 4,000 to 5,000 teaching positions, both per pupil ratio and average teacher salary have sharply increased, since remaining personnel were more experienced and highly trained. When statistical controls are applied, the average state teacher salary is about 3 percent higher in 1988-89 than in 1974-75, but about 5 percent lower that its 1970-71 peak. Average teacher salaries differ considerably among different types of districts. In 1989-90, the average teacher salary in Minnesota stood at 103.5 percent of the national average and ranked 15th among the states. In constant dollar terms, the salaries of American teachers initially peaked in 1972, lost purchasing power the rest of the decade, and gradually returned to the 1972 peak during the 1980s. Appendices contain summary trend data, price inflation adjustment methodology, training and experience adjustment methodology, and urbanization adjustment methodology. (MLH/Author)