- 76 specialization in industrial education, except that principals of accredited vocational-technical high schools shall also be qualified in secondary school administration and supervision. Local Coordinator of Industrial Education (pro- gram-wide). He shall have a minimum of two years of work experience at the journeyman or trained employee level in an industrial pursuit and shall have secured a high school diploma or a state certificate of equivalency plus 26 semester hours of approved industrial education teacher- training courses, including three semester hours each in administration of vocational-technical education, supervision of industrial education, and school-community employee-employer relationships. 1.52-2 Experience in Teaching in Industrial Education. The coordinator shall have at least three years (144 hours per year minimum) of experience in teaching industrial subjects. 2.0 PROGRAM OF INSTRUCTION Industrial education may include training in any industrial pursuit, skilled or semi-skilled trade, craft, or occupation which directly functions in the designing, producing, processing, assembling, main- taining, servicing, or repairing of any product or commodity; and in any other occupation which is usually considered to be technical and in which workers such as nurses, laboratory assistants, drafts- men, and technicians are employed. 2.1 Evening and Part-Time Trade or Technical Extension Classes. An evening trade or technical extension class is defined as one conducted during the non-working hours of the enrollees. A part-time trade or technical extension class is one conducted during the usual working hours of the enrollees. 2.11 Procedure to Be Used by State to Assure That Enrollees Will Be Qualified. Persons enrolled in evening or part- time trade or technical classes shall be at least 16 years of age and shall have legally left the full-time school to engage in employment. Enrollees in evening and part- time trade or technical extension classes shall be employed (or temporarily unemployed) in the occupation