The Air Force typically trains 30,000 to 40,000 new airmen in some 300 specialties each year. It utilizes two methods for training its enlistees: centralized initial skills training (IST, or “schoolhouse” training) and decentralized on-the-job training (OJT). All too often, only IST costs are considered when “pricing” training, seriously underestimating the overall cost to train an airman. When all the costs are considered, including those of OJT, decisions related to the length of IST can be better informed.

From a statistical analysis of data taken from surveys of senior enlisted personnel, they were able to assess how productivity changes when IST course length changes and to make recommendations concerning the IST course lengths that would produce the most productive airmen for the least possible cost.