IV. TYPE 93; INSTRUCTION No marked change has been.made in the type of instruction. In every department, the courses are based on the needs of the commercial industry. The student is trained in the specific sciences and skills needed to become proficient in the vocational branch in which he is interested. Every class operation is supplemented by parallel project work which forms the practical laboratory for the class problem. At the same time, it is necessary to recognize the fact that the entire structure of commerce, industry and agriculture throughout the nation is changing. While placement of California Polytechnic School recommended graduates has been exceptionally high, it is nationally recognized that young men are having difficulty in getting established, particularly in industrial fields. One survey of large industries shows that only 3 per cent of the employees are under 26 years of age. This indicates that the average placement age is advancing, and that the educational foundation may be further expanded in order that the prospective employee be as highly developed as possible in science and skills, when the vocational field is ready to receive him. During the last few generations, this has been generally recognized: For many years, common-school education was sufficient, than high school graduation was required, and now a four-year degree course is a minimum in many fields. The California Polytechnic School curricula had been set up primarily on a two-year basis for special training in particular fields. If the student wished to have more than one recommended major in related subjects, such as beef cattle husbandry and sheep husbandry, he could secure the additional work with a third year. If an aeronautics student wished to take Department of Commerce license examinations for both airplane mechanics and airplane engine mechanics, he could do so in three years.