This report describes how state education agencies in the Midwest Region monitor teacher supply, demand, and shortage; details why they monitor these data; and offers estimates of the monetary costs incurred in performing such studies. This study responds to a request from state education agencies in the Midwest Region (Illinois, Indiana, Iowa, Michigan, Minnesota, Ohio, and Wisconsin) to learn more about teacher supply and demand studies conducted in neighboring states. The study aimed to determine: (1) what motivates states to assess teacher supply and demand; (2) what methodologies do Midwest Region states employ to monitor teacher supply and demand; (3) what the costs are of various state approaches. The study found that state education agencies conduct teacher supply and demand studies to comply with federal laws and regulations, including provisions of part B of the Individuals with Disabilities Education Act, federal regulations on loan deferment or forgiveness programs and scholarships, and Title II requirements of the Higher Education Act. Appended are: (1) Descriptions of codes of federal regulation and federal law related to teacher shortage areas; (2) The literature review for forecast models; (3) Interview questions; and (4) Data reported in most recent teacher supply and demand reports, by Midwest Region state. (Contains 2 boxes, 1 figure, 10 tables, and 11 notes.)