Provided are results of a study (which is replicated annually) designed to identify specific areas of science and mathematics teacher supply/demand inconsistencies in the State of Iowa. Data are summarized on the number of graduates from teacher education institutions in Iowa completing preparation for a teaching certificate for the years 1970-82. Additional data (in table format) are provided for the years 1973-74 and 1978-79 on science teacher distribution by subject area taught, educational background, and school district size, and on teachers (by subject area and school district size) with undergraduate/graduate majors in their area of teaching responsibility. Major findings indicate a decline in mathematics/science teacher supply from 1970-82, a change in the job market due to competition in hiring from business and industry, critical shortages in sciences (especially earth science, physics, and chemistry) and mathematics, and serious long range consequences of continued critical shortages on the total educational system. Also presented are results of a national telephone survey on the estimated supply of secondary biology, chemistry, physics, general science, earth science, and mathematics teachers by state (1980-1982). (JN)